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JULIAN GAU

EIN 87-3058480 BOSTON, MA

Largest nonprofits in Massachusetts

Revenue 2024
$30,149
Expenses 2024
$25,900

Program services were 79.4% of total expenses calculated — Part III's total program service expenses over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A68
Classification
1200
Street
67 NEWBURY ST

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Other organizations at this address

4 other organizations in the IRS Business Master File list the same street address. matched by us

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

Mission and programs · 2024

Primary exempt purpose

The mission of the Horizon Ensemble is to enrich the artistic and cultural lives of our communities of musicians and audiences through our orchestral concerts. We serve the community of the Boston area by providing accessible musical performances at no cost in a historical space. We also support the community of musicians in Boston by acting as a high-level ensemble playing unique repertoire with a relatively short rehearsal cycle. Finally, we further the artistic development of the community of young composers by providing them with performances of large-ensemble pieces, a much-desired opportunity.

  • Horizon Ensemble Concert 8.5 : Cycles was delivered on February 24, 2024. In this concert, chamber music by Kate Soper, Olivia Jones, Chole Smith, and J.S. Bach were presented. Octet (1900) by George Enescu, arranged for string orchestra was performed at the 2nd half of the concert. In addition to Horizon Ensemble members, guest performers, Der Gestanke and The Ringers, were invited to share their performances with the audiences.

    Expenses $2,997 · Grants $3,000

  • Horizon Concert 9: Forays, was held on April 27, 2024. As the weather warms, we celebrated music from composers' own springtimes: their first forays into the orchestral world. A Piano Concerto by our friend Ryan Johnston was premiered, featuring pianist Andrew Cannestra. With soulful tunes and soaring melodies, this new concerto foretells a bright future for orchestral writing. The second half of the program is the Gaelic Symphony by Boston's own Amy Beach, the first major symphony by an American woman! The name comes from Amy Beach's inspiration: she infused her symphony with the flowing, sprightly songs of northern Europe.

    Expenses $3,623 · Grants $3,800

  • Horizon Ensemble Concert 10: Summer Memories was delivered on August 11, 2024. As sunny days flourish, the Horizon Ensemble performed music by friends and music of history. This concert included two premieres: Liang Si by Yangfan Xu, a dancelike evocation of the harvest, and A Moment of Everything by Jackson Carter, celebrating the joys of college days. Horizon Ensemble also played Maurice Ravel's stately, songful Pavane for a Dead Princess; Gabriela Lena Frank's rhythmic, Peruvian-influenced Elegía Andina, and Florence Price's mysterious The Oak. The Ensemble finished with Samuel Barber's nostalgic portrait Knoxville: Summer of 1915, featuring soprano Julia Pottinger. Along the way, local Boston-area poets were invited to share some of their work to match the music!

    Expenses $5,193 · Grants $6,000

  • Horizon Ensemble Concert 11: Freedom, was delivered on October 6, 2024. "The caged bird sings of freedom." The Horizon Ensemble celebrated the music of freedom as October's winds start to rush upon us. The concert began with the first surviving symphony by a woman: the Symphony in C Major by Marianna Martines, a Viennese composer and pianist who was friends with Mozart and Haydn. Next were two pieces by friends: Shaheed by Andrés Ballesteros, a string orchestra piece inspired by the Arab Spring; and Laleh-zar (Tulip Field) by Sepehr Pirasteh, drawing from the Iranian symbolism of tulips as representing love and sacrifice. In the end, the concert finished with Johannes Brahms, who wrote his Symphony No. 3 in F Major around his personal motto: "free but happy".

    Expenses $4,356 · Grants $4,500

  • Horizon Ensemble Concert 11.5: Shades of Autumn was delivered on November 16, 2024. "Season of mists and mellow fruitfulness..." The Horizon Ensemble presented a concert of chamber and orchestral music inspired by autumn and invited Boston music fans to join them on Saturday, November 16 at 3:00 PM in the Church of the Covenant for some vibrant music amongst the falling leaves and enchanting winds. The concert began with Jennifer Higdon's Autumn Music for wind quintet, a soulfully flowing portrait of this season. Next is Three Moods in New England by our friend Hayley Qin, in which seven wind and brass instruments evoke nature-born memories of Vermont, Connecticut, and Forest Hills. Followed by Igor Stravinsky's lively Dumbarton Oaks Concerto combines classical aesthetics with lively modern rhythmic action. Finally, the full Horizon Ensemble came together for Joachim Raff's rarely-performed Symphony No. 10, "To Autumntime", featuring melancholy sighs and ghostly waltzes besides festive hunting calls.

    Expenses $4,408 · Grants $5,000

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Julian Gau

    President, Music Director & Conductor

    Total calculated
    $0
    Hours/week
    15

  • Jack Gau

    Chief Financial Officer

    Total calculated
    $0
    Hours/week
    2

  • Anchi Lin

    Operating Officer

    Total calculated
    $0
    Hours/week
    5

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $30,149
    Expenses
    $25,900
    Contributions
    $29,699
    Grants paid
    $0
  • 2023
    Revenue
    $23,318
    Expenses
    $16,345
    Contributions
    $23,018
    Grants paid
    $0
  • 2022
    Revenue
    $6,033
    Expenses
    $10,434
    Contributions
    $6,033
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Form 990-N e-Postcard, tax year 2024

Tax period
1 January 2024 to 31 December 2024
Principal officer
Julian Gau
Mailing address
1209 Boylston Street Apt 51Boston MA 02215
Website
https://horizonensemble.org/

As filed, from the IRS e-Postcard file of 2 November 2026. The IRS publishes only each organization's most recent postcard, so earlier years are not shown. A 990-N carries no financial detail. The postcard also gives the principal officer's address, which is not shown here.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.