California · Nonprofit
Hidden Valley Music Seminars
Hidden Valley Music Seminars (California) receives grants from 11 organizations whose IRS filings report $1,288,494 to it, the largest being RING FOUNDATION ($1,025,000). 5 of them have funded it in more than one year.
Against its field
Hidden Valley Music Seminars has grown faster than three-quarters of the 5,123 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 5,123 arts & culture nonprofits $1M–$10M, FY2024
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Arnhold Foundation Incshared funders
- Williamson Foundation for Musicportfolio match
- Ross McKee Foundation for the Musical Artsportfolio match
The organization over time
Each line starts at 100 in 2020, so what you read is the shape rather than the size: 150 means half as much again as 2020, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2021 7% · 2022 5%. Grants only. Government contracts and fees sit inside program revenue.
13% of Hidden Valley Music Seminars’s revenue is contributions — more earned-revenue than three-quarters of its peers (64% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 5 reported years ran a deficit.
reserve
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 5 funders, grant income fell $600k → $74k.
5 of 11 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 7% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of Hidden Valley Music Seminars’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
Hidden Valley Music Seminars leans on a few funders — its largest provides 80% of grant income and the top three 92%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 100% · 2018 100% · 2019 97% · 2020 98% · 2021 47% · 2022 32% · 2023 68% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
83% of Hidden Valley Music Seminars's funders are still giving 2 years after their first grant; 45% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
85% of Hidden Valley Music Seminars's grant income comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $87k arriving through sponsors registered in 5 statesis excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first. Your 11 funders put you under-funded among the 400 organizations that share them.
- Arnhold Foundation Incshared fundersNY · backs 45 organizations that share your funders
- Williamson Foundation for Musicportfolio matchits grantees resemble your mission
- Ross McKee Foundation for the Musical Artsportfolio matchits grantees resemble your mission
- Lane Arts Councilportfolio matchits grantees resemble your mission
- D'Addario Foundation Incportfolio matchits grantees resemble your mission
- The Aaron Copland Fund for Music Inc Co Alter Kendrick & Baron LLPportfolio matchits grantees resemble your mission
- Pacific Harmony Foundationportfolio matchits grantees resemble your mission
- Chamber Music America Incportfolio matchits grantees resemble your mission
- Colburn Foundationportfolio matchits grantees resemble your mission
- The Amphion Foundation Inc Co Alter Kendrick & Baron LLPportfolio matchits grantees resemble your mission
- New Music USA Incportfolio matchits grantees resemble your mission
- Los Angeles Philharmonic Associationportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like Hidden Valley Music Seminars
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
87% of spending goes to programs.
Governance
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Hidden Valley Music Seminars: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Hidden Valley Music Seminars?
- Hidden Valley Music Seminars (California) receives grants from 11 organizations whose IRS filings report $1,288,494 to it, the largest being RING FOUNDATION ($1,025,000). 5 of them have funded it in more than one year.
- How many funders does Hidden Valley Music Seminars have?
- IRS filings report 11 organizations giving $1,288,494 in grants to Hidden Valley Music Seminars, 5 of which have funded it in more than one year.
- Who is the largest funder of Hidden Valley Music Seminars?
- RING FOUNDATION is the largest funder on record, with $1,025,000 in grants. The full list of funders is on this page.
- How can an organization like Hidden Valley Music Seminars find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2020–2024), and the filings of 11funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing