| IRS990EZ/ActivitiesNotPreviouslyRptInd | 0 | false |
| IRS990EZ/BooksInCareOfDetail/PersonNm | 0 | MARI RAPP |
| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 3038182182 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 4816 PENNSYLVANIA AVE |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | BOULDER |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CO |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 80303 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 23109 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 26115 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | false |
| IRS990EZ/ContributionsGiftsGrantsEtcAmt | 0 | 54622 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | false |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | 3758 |
| IRS990EZ/FeesAndOtherPymtToIndCntrctAmt | 0 | 18330 |
| IRS990EZ/FiledScheduleAInd | 0 | true |
| IRS990EZ/ForeignFinancialAccountInd | 0 | false |
| IRS990EZ/ForeignOfficeInd | 0 | false |
| IRS990EZ/Form1120PolFiledInd | 0 | false |
| IRS990EZ/Form990TotalAssetsGrp/BOYAmt | 0 | 47206 |
| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 50964 |
| IRS990EZ/GrossReceiptsAmt | 0 | 54622 |
| IRS990EZ/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/LobbyingActivitiesInd | 0 | false |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | false |
| IRS990EZ/MethodOfAccountingCashInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 47206 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 50964 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 47206 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 50964 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 3.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 3 | 3.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 4 | 1.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 5 | 20.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 6 | 20.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 7 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 8 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 5 | 8310 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 6 | 11650 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 7 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 8 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | MICHAEL MAISONPIERRE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | MARIA GIORDANO |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | LAUREN JOST |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 3 | VINNIE BUSHAN |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 4 | NOEMI LISTERI |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 5 | MARI RAPP |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 6 | ELISA SNYDER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 7 | SKIP RAPP |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 8 | EILEEN ROJAS |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | VICE PRESIDE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | SECRETARY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 3 | TREASURER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 4 | BILINGUAL EX |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 5 | EXECUTIVE D |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 6 | EXECUTIVE DI |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 7 | FINANCE ADVI |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 8 | GRANT WRITER |
| IRS990EZ/OperateHospitalInd | 0 | false |
| IRS990EZ/Organization501c3Ind | 0 | X |
| IRS990EZ/OrganizationDissolvedEtcInd | 0 | false |
| IRS990EZ/OrganizationHadUBIInd | 0 | false |
| IRS990EZ/OtherAssetsTotalDetail/BOYAmt | 0 | 24097 |
| IRS990EZ/OtherAssetsTotalDetail/EOYAmt | 0 | 24849 |
| IRS990EZ/OtherExpensesTotalAmt | 0 | 12574 |
| IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt | 0 | NONE |
| IRS990EZ/PartVIOfCompOfHghstPdEmplTxt | 0 | NONE |
| IRS990EZ/PoliticalCampaignActyInd | 0 | false |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | BOULDER MUSE IS A FREE AFTERSCHOOL MUSIC PROGRAM FOR CHILDEREN WHOSE FAMILES MAY NOT BE ABLE TO PAY FOR PRIVATE MUSIC LESSONS. BOULDER MUSE IS A SAFE AND NURTURING COMMUNITY OF STUDENTS, TEACHERS, VOLUNTEERS AND PARENTS DEDICATED TO GIVING YOUNG PEOPLE THE OPTIMAL MUSICAL ENVIRONMENT IN WHICH TO THRIVE, AND THE RIGHT COMMUNITY TO DO IT IN. |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | BOULDER MUSE HELD OUR PROGRAM IN THE FALL OF 2022 AT THE FAMILY LEARNING CENTER, WHERE WE TAUGHT VIOLIN, GUITAR, FLUTE, CLARINET, SAXOPHONE, AND CHORUS. WE WERE LIMITED BY SPACE, BUT WERE STILL ABLE TO TEACH OVER 30 STUDENTS. IN THE SPRING OF 2023 WE WERE ABLE TO HOLD THE PROGRAM AT THE UNIVERSITY HILL SCHOOL, IN ADDITION TO THE FAMILY LEARNING CENTER. AT THE UNIVERSITY HILL SCHOOL WE WERE ABLE TO ADD CELLO AND TRUMPET AS ADDITIONAL INSTRUMENTS, WHICH THE STUDENTS TRULY LOVE. WE HAD OVER 35 STUDENTS AT THIS SCHOOL, AND ARE THERE TO THIS DAY. WE WERE VERY FORTUNATE TO HAVE RECEIVED SEVERAL GRANTS DURING COVID, AND AS THE SCHOOLS BECAME MORE LENIENT ABOUT HOLDING OUR PROGRAMS THERE. WE CONTINUE TO DEPEND ON PRIVATE DONATIONS FROM PEOPLE WHO UNDERSTAND OUR MISSION. |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 0 | 46815 |
| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990EZ/SalariesOtherCompEmplBnftAmt | 0 | 19960 |
| IRS990EZ/SchoolOperatingInd | 0 | false |
| IRS990EZ/SubjectToProxyTaxInd | 0 | false |
| IRS990EZ/TanningServicesProvidedInd | 0 | false |
| IRS990EZ/TotalExpensesAmt | 0 | 50864 |
| IRS990EZ/TotalProgramServiceExpensesAmt | 0 | 46815 |
| IRS990EZ/TotalRevenueAmt | 0 | 54622 |
| IRS990EZ/TransactionWithControlEntInd | 0 | false |
| IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990EZ/TypeOfOrganizationCorpInd | 0 | X |
| IRS990EZ/WebsiteAddressTxt | 0 | BOULDERMUSE.ORG |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 54622 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 30285 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 19319 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 24536 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 31911 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 160673 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.00000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.00000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.91290 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.97900 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 146673 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearAmt | 0 | 11000 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus2YearsAmt | 0 | 3000 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/TotalAmt | 0 | 14000 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearAmt | 0 | 11000 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus2YearsAmt | 0 | 3000 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt | 0 | 14000 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 54622 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 30285 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 19319 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 24536 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 31911 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 160673 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 54622 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 30285 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 19319 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 24536 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 31911 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 160673 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | EXPENSES ADVERTISING AND PROMOTION 75 OFFICE SUPPLIES AND SOFTWARE 2,748 OFFICE EXPENSE 248 IT SERVICES 149 TRAVEL 16 PROFESSIONAL SERVICES 65 MEALS 937 SHEET MUSIC 248 INSTRUMENT REPAIRS 716 IN KIND CONTRIBUTION EXP 6,925 NON-INVESTMENT DEPRECIATION 447 TOTAL 12,574 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | INVENTORIES FOR SALE OR USE 22,927 22,927 1,632 2,831 LESS ACCUMULATED DEPRECIATION 462 909 TOTAL 24,097 24,849 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | BOULDER MUSE IS A FREE AFTERSCHOOL MUSIC PROGRAM FOR CHILDEREN WHOSE FAMILES MAY NOT BE ABLE TO PAY FOR PRIVATE MUSIC LESSONS. BOULDER MUSE IS A SAFE AND NURTURING COMMUNITY OF STUDENTS, TEACHERS, VOLUNTEERS AND PARENTS DEDICATED TO GIVING YOUNG PEOPLE THE OPTIMAL MUSICAL ENVIRONMENT IN WHICH TO THRIVE, AND THE RIGHT COMMUNITY TO DO IT IN. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | BOULDER MUSE HELD OUR PROGRAM IN THE FALL OF 2022 AT THE FAMILY LEARNING CENTER, WHERE WE TAUGHT VIOLIN, GUITAR, FLUTE, CLARINET, SAXOPHONE, AND CHORUS. WE WERE LIMITED BY SPACE, BUT WERE STILL ABLE TO TEACH OVER 30 STUDENTS. IN THE SPRING OF 2023 WE WERE ABLE TO HOLD THE PROGRAM AT THE UNIVERSITY HILL SCHOOL, IN ADDITION TO THE FAMILY LEARNING CENTER. AT THE UNIVERSITY HILL SCHOOL WE WERE ABLE TO ADD CELLO AND TRUMPET AS ADDITIONAL INSTRUMENTS, WHICH THE STUDENTS TRULY LOVE. WE HAD OVER 35 STUDENTS AT THIS SCHOOL, AND ARE THERE TO THIS DAY. WE WERE VERY FORTUNATE TO HAVE RECEIVED SEVERAL GRANTS DURING COVID, AND AS THE SCHOOLS BECAME MORE LENIENT ABOUT HOLDING OUR PROGRAMS THERE. WE CONTINUE TO DEPEND ON PRIVATE DONATIONS FROM PEOPLE WHO UNDERSTAND OUR MISSION. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990-EZ, PART I, LINE 16 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990-EZ, PART II, LINE 24 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990-EZ, PART III |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990-EZ, PART III, LINE 28 |
| ReturnHeader/BuildTS | 0 | 2023-04-26 12:10:37Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | MARI RAPP |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | EXECUTIVE DIRECTOR |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 3038182182 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2024-02-27 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | BOULDER MUSE |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | BOUL |
| ReturnHeader/Filer/EIN | 0 | 474666764 |
| ReturnHeader/Filer/PhoneNum | 0 | 3038182182 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 4816 PENNSYLVANIA AVE |
| ReturnHeader/Filer/USAddress/CityNm | 0 | BOULDER |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | CO |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 80303 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | true |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 831352780 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | BOULDER CPA GROUP |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 1790 30TH ST STE 418 |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | BOULDER |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | CO |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 80301 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 3034493060 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2024-04-04 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | CAROL BAILIFF CPA |
| ReturnHeader/ReturnTs | 0 | 2024-04-04T10:56:57-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonFirstNm | 0 | MARI |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonLastNm | 0 | RAPP |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2022-08-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2023-07-31 |
| ReturnHeader/TaxYr | 0 | 2022 |