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US nonprofit · EIN 462481406 · Washington, DCiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 462481406) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe time served.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Harmonic Music Foundation Inc

Donations deductible
Revenue
$939k
year to 31 December 2024
Expenses
$659k
year to 31 December 2024
Total assets
$375k
$496k liabilities
Net assets
Minus $120k
assets less liabilities
Directors and trustees
5
6.0 years on average
Staff
27
10 volunteers
Left since last filing
0
no seats appear to have opened
Voting members
5
reported in Part VI
How am I connected?

Harmonic Music Foundation Inc's network

5 people1 organisationi5 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (5). Violet dotted lines (1) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

5 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 5 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Brigette WillnerCOO2018
8 yrs
Christoph GreenTrustee2022
4 yrs
Kristine PartinTrustee2022
4 yrs
Marshall WillnerExecutive Dir.2018
8 yrs
Steve KulbergTrustee2022
4 yrs
Under 5 years5 to 6 years6 years or more

Pay and hours

year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Marshall WillnerExecutive Dir.50$37k
Brigette WillnerCOO50$35k
Kristine PartinTrustee2$0
Christoph GreenTrustee2$0
Steve KulbergTrustee2$0

About

Legal name
Harmonic Music Foundation Inc
EIN
462481406
Address
3815 Livingston St Nw, Washington, DC, 20015-2802
State
District of Columbia
Mission
To provide music lessons in a fun and nurturing environment (as filed on the Form 990)
Activity (NTEE)
A99 Arts, culture and humanities
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Arts, Culture & Humanities
Size band
4 (IRS master file code)
Formed
2013
Principal officer
Brigette Willner (as named on the Form 990)
IRS ruling date
1 June 2014
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsBrigette Willner
≥8years on the filingsMarshall Willner
≥4years on the filingsChristoph Green
≥4years on the filingsKristine Partin

Latest return

year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.
Total assets
$375k
Total liabilities
$496k
Net assets or fund balances
Minus $120k
Contributions and grants received
$166k
Program service revenue
$773k
Employees
27
Volunteers
10

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$939k$659k$280k

As filed on the IRS Form 990. US dollars.

State registration

1 entityiBusiness-entity registers published by US states. These records are matched to this organisation by name and state, not by EIN, and are labelled as likely matches. Street addresses are not shown.
Harmonic Music Foundation Inc. likely matchiMatched by exact name and state (and ZIP where shown). State registers do not publish EINs, so this is not a confirmed match. Source: DC Department of Licensing and Consumer Protection (DLCP), corporate registrations (opendata.dc.gov). Licence: CC BY 4.0. Attribution: DC DLCP. Data last fetched 18 October 2026.
State
District of Columbia
Entity type
Domestic Nonprofit Corporation
Status
Active - In Good Standing
Formed
25 March 2013
Registered agent
Brigette Willner (city and state not held)