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      <Form990PartVIISectionAGrp>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>EARNINGS ON THE ORCHESTRA'S ENDOWMENT FUNDS ARE INTENDED TO BE USED FOR THE ONGOING SUPPORT OF THE ORCHESTRA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORCHESTRA REVIEWS AND ASSESSES ALL ACTIVITIES ANNUALLY TO IDENTIFY ANY CHANGES IN THE SCOPE OF THE ACTIVITIES AND REVENUE SOURCES AND THE TAX TREATMENT THEREOF TO IDENTIFY ANY UNCERTAINTY IN INCOME TAX. FOR THE YEAR ENDED JUNE 30, 2021, NO PROVISION FOR INCOME TAXES WAS MADE AS THE ORCHESTRA HAD NO SIGNIFICANT NET UNRELATED BUSINESS INCOME AND DID NOT IDENTIFY ANY UNCERTAIN TAX POSITIONS REQUIRING RECOGNITION OR DISCLOSURES IN THE FINANCIAL STATEMENTS. THE ORCHESTRA'S TAX RETURNS ARE SUBJECT TO POSSIBLE EXAMINATION BY THE TAXING AUTHORITIES. FOR FEDERAL TAX PURPOSES, THE TAX RETURNS REMAIN OPEN FOR POSSIBLE EXAMINATION FOR A PERIOD OF THREE YEARS AFTER THE RESPECTIVE FILING DEADLINES OF THOSE RETURNS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DRAFT FEDERAL FORM 990 IS REVIEWED IN DETAIL BY BPO'S BOARD TREASURER AND BPO'S MANAGING DIRECTOR. SUCH REVIEW TAKES PLACE UPON RECEIPT OF THE DRAFT FORM 990 RECEIVED FROM THE INDEPENDENT PUBLIC ACCOUNTING FIRM WHO CONDUCTS THE AUDIT OF BPO. THE REVIEW INVOLVES COMPARISON OF FINANCIAL DATA IN THE FORM 990 WITH THE AUDITED FINANCIAL STATEMENTS AND THE BOOKS AND RECORDS OF BPO AND A REVIEW OF ALL NARRATIVE INFORMATION FOR ACCURACY AND COMPLETENESS. THE FORM 990 IS THEN PROVIDED TO THE FULL BOARD OF DIRECTORS FOR REVIEW AND DISCUSSION. UPON APPROVAL BY THE BOARD OF DIRECTORS, THE FORM 990 IS SIGNED AND FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>BOSTON PHILHARMONIC ORCHESTRA CORPORATION HAS A POLICY OF NOT ENGAGING IN ANY BUSINESS TRANSACTION OF ANY TYPE THAT MAY DIRECTLY OR INDIRECTLY BENEFIT AN INDIVIDUAL BOARD MEMBER. POTENTIAL CONFLICTS ARE MONITORED BASED UPON REVIEW WITH THE BOARD AND EMPLOYEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORCHESTRA'S EXECUTIVE DIRECTOR AND KEY EMPLOYEE (IF ANY) SALARIES ARE REVIEWED AND APPROVED BY THE FINANCE COMMITTEE AND SO NOTED IN THE MINUTES. THE FINANCE COMMITTEE UTILIZES SALARY SURVEYS, COMPARABLE DATA FROM SIMILAR SIZED NOT FOR PROFIT ORGANIZATIONS AND THE SPECIFIC REQUIREMENTS OF THE ORCHESTRA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>BPO MAKES ITS FORM 990 AVAILABLE UPON REQUEST. AUDITED FINANCIAL STATEMENTS AND GOVERNING DOCUMENTS MAY BE MADE AVAILABLE UPON BPO'S CONSIDERATION OF THE REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS A FINANCE COMMITTEE THAT ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF ITS FINANCIAL STATEMENTS AND SELECTS AN INDEPENDENT AUDITOR. THIS PROCESS HAS NOT CHANGED FROM THE PRIOR YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
