We are looking for more article submissions about acoustic microtonal instruments (adapted or specially built) for our MP Resources Folder, DM us if you are interested in contributing to resources for composers.

10-11 April,Hyperchromatic Festival, Goldsmith's University, London, See Microtonal Projects' website Composers can submit digital recordings (audio, video or midi) of microtonal works, to be exhibited as part of a listening session. Submit by 10th March per drive link to [email protected]

New Impro Album out now, microtonal and not microtonal jazzhalo.bandcamp.com/album/echoes

UNTWELVING Convention for contemporary microtonal and xenharmonic music of all genres 22.–24. Mai 2026  Münchner Kammerspiele & FatCat The call is now open. All information about categories, deadlines, and submissions can be found here: untwelving.com

The Donald Bousted Edition is now on Blueskly!

The Donald Bousted double bell quarter-tone trumpet. Steve having fun with bell positions!

Upcoming in 2026: April: 1. Hopefully the second Hyperchromatic Festival, fingers crossed! 2. Ensemble VORTEX play 'Inside Lud's Church' in Manchester microtonalprojects.com/inside-luds-... Do let us know about any conferences or festivals concerning microtonal music- we will add to our calendar.

2025 Microtonal Zoom Meetings: these came about owing to the microtonally interested people I met during tours of the Microtonal Trumpet post-pandemic. Initially, to put composers who are writing for this project in touch with one another. Now it is more broadly about topics of microtonality.

New Instrument in 2025: Conversion of a Yamaha Chicago C trumpet into a Double Bell Trumpet, the 'Donald Bousted' including quarter-tone valve Sigmar Fischer has done an amazing job. Also a shout-out to Takumi who created the lever mechanism for the fourth www.instagram.com/themicrotona...

2025 New Soundcloud for music by our founder, Donald Bousted soundcloud.com/donald-boust...

2025 Podcasts: Stephen Altoft was interviewed about Microtonal Projects and the Microtonal Trumpet project by Stephen Weigel for his podcast, 'Now and Xen'. These podcasts were a new discovery! youtu.be/oB8Wh4hJovw?...

2025 New Additions to our Microtonal Projects Resources folder on Dropbox: - Donald Bousted's PhD Thesis - Overheads and texts from the presentations at Hyperchromatic Festival' - Articles by Carla Rees about her Kingma flutes.

Digital Releases in 2025: on most platforms! Donald's 'Floating on my Cloud'- non-microtonal music Recordings of works by Jim Dalton, Paul Rhys, Isak Persson, Richard Whalley for 19-div trumpet or flugelhorn open.spotify.com/artist/2oWcc... Check out out BLOG for details: microtonalprojects.com

Festivals which we supported in 2025: the first 'Hyperchromatic Festival' microtonalprojects.com/hyperchromat... YouTube: www.youtube.com/@GoldsmithsM... The first Transnational MicroFest in France, Germany and Switzerland, organised by Matthias S. Krüger and team. www.trinational-microfest.de

Stephen Altoft's latest conversion- quarter-tone, double bell trumpet in C 'The Donald Bousted Double Bell trumpet'

Hello out there to friends of microtonal music!