this list is neither exhaustive nor up to date.
solo
Barbier, Matt- 146A #1-20. euphonium and playback^
Barbier, Matt- 3 lines for bagpipes^
Barbier, Matt- 9/26/1940 for amplified euphonium^
Barbier, Matt- three sieves for trombone^
Barbier, Matt- l/r for prepared bass trumpet^
Beetz, Rachel- 3200 Phaethon [upcoming]^
Czernowin, Chaya- Adiantum Capillus-Veneris I: Songs of the muted one
[version for solo trombone by barbier]^
Deyoe, Nicholas- facesplitter^ for trombone
Donahue, Dustin- negative (with playback)^
Franzson, Davíð Brynjar- aviary, fragment^
Franzson, Davíð Brynjar- An Urban Archive as an English Garden^
Greenwald, Andrew- A Thing is a Hole in a Thing it is not (vi). euphonium^
Hölszky, Adriana- WeltenEnden (version for trombone and euphonium)*
Lewis, George- Oraculum* for trombone
Lou, Michelle- HoneyDripper for trombone and electronics [2016]
McCallum, Clint- Bowel Resection^ for trombone
McCormack, Timothy- HEAVY MATTER for trombone
Niblock, Phil- A Trombone Piece
Niblock, Phil- A Third Trombone Piece
Schweinitz, Wolfgang von- JUZ, op. 40. (with pre-recorded trombone)^
Subotnick, Morton- the Wild Beasts [with piano and ghost score]
Tallon, Tina- a silhouette of constrained motion^ for trombone
Terrazas, Wilfrido- torre del norte for any number of brass players
Trayle, Mark- Unstable Trombone. (with feedback processing)^
Wannamaker, Robert- new work [upcoming]^
Wannamaker, Robert- Phase Diagram for performer with phonograph turntable and contact microphones
Young, Katherine- puddles and crumbs (amplified trombone and electronics)
Xenakis, Iannis- keren for trombone
Zimmermann, Walter- Erde-Wasser-Luft-Töne [with piano and percussion]
Halac, Fede Camara- ciudad invetida*
Hill, Jen- piece for internet^
Iannotta, Clara. The Dark Earth Bends. for two trombones and orchestra
Lamb, Catherine- new work [upcoming 2021]^
Lamb, Catherine- Periphery for 2 [version for 2 trombones, realization by barbier]^
Lim, Liza- Pharmakon^
Lou, Michelle- Hexa for two euphoniums and electronics^
Maier, Manuela- what you see, is it^
Marino, Jessie- Throw Me to You and Back Again (X2)^
McCormack, Timothy- WORLD EATER^
McCormack, Timothy- WORLDEATER 2, for 2 euphoniums [upcoming]^
Murray, Max- Hlimman [beneath the earth]^
Olencki, Weston. tridecimal^
Pax, John- new work [upcoming]^
Pluta, Sam- Matrix for George Lewis^
Rosenberger, Katharina- Shift (for two trombones and ensemble)*
Schweinitz, Wolfgang von- Juz. re composed for two trombones by barbier^
Sdraulig, Charlie- Alike and Apart^
Snir, Adi- Strainer^
Swithinbank, Chris- new work [upcoming]^
St Louis, Lester. new work
Takasugi, Steven Kazuo- new work [upcoming]^
Walker, Scott- Rubato for two trombones and string orchestra. LA Phil and wildUp comission^
*US premiere