Shawn O'Sullivan is a composer, electronic musician, DJ, and audio engineer based in NYC. He’s performed and recorded under different aliases such as Vapauteen, 400ppm, Civil Duty & Garum with Beau Wanzer. Shawn has released music on several noteworthy labels, including L.I.E.S. records, Avian, and Cititrax.

Projects / Releases


400 PPM

Vapauteen

Shawn O’Sullivan

Further Reductions

Led Er Est

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Civil Duty / Garum with Beau Wanzer


Press / Interviews

Nowamuzyka interview:

Every counterculture is about building a utopia - an interview with 400ppm



Inverted Audio interview:

Fit for Purpose: Shawn O’Sullivan talks up his debut LP on Avian as 400ppm


Selected DJ Mixes


Garum - Garum EP (Trilogy Tapes, 2019)

Shawn O’Sullivan - Free Flight (W.T. Records 2012) 

Shawn O’Sullivan - Wrest / Ox (Primitive Languages - 2017)

Shawn O’Sullivan - Live @ Spinoff Gabber, 6/2/18 ‎(Cass, Mixed)

400PPM  - Non Nocere (Avian, 2013)

400PPM  - Just-In-Time (Avian, 2016)

400PPM  - Fit For Purpose (Avian, 2017)

400PPM  - Locked Grooves (Avian, 2017)

Vapauteen - Weld EP (L.I.E.S., 2013)

Vapauteen - Vapauteen (L.I.E.S., 2013)

Vapauteen - This Coercion Pt. 1 (L.I.E.S., 2016)

Vapauteen - This Coercion Pt. 2 (L.I.E.S., 2016)

Civil Duty - Security (The Corner, 2013) 

Civil Duty - Live in Los Angeles 1/25/14 (Mount Analog, 2014)

Civil Duty - Civil Duty (The Corner, 2015)

The Giant Monarch (Comp) (Fifth Wall Records, 2014) 

Further Reductions - S/T (Robert & Leopold 2013)

Further Reductions - Woodwork (Cititrax, 2014)

Further Reductions - Decidedly So (7” Captured Tracks, 2010)

Further Reductions - Disparate Elements (Knekelhuis, 2017) 

Further Reductions - Array (Knekelhuis, 2020) 

Led Er Est - Dust On Common (Weird Records, 2009)

Led Er Est - (Throaning Tapes, 2010)

Led Er Est - The Diver (Sacred Bones Records, 2012)

Led Er Est / S.S.P.S. - Split ‎(7", Ltd, 2008)

Led Er Est - Poll Gorm (Captured Tracks, 2009)

Led Er Est - May (Captured Tracks, 2011)

Led Er Est / Ancien Régime split (Mannequin, 2010)