György Kurtág-Rückblick (trumpet, double bass, two pianos)
Unsuk Chin-Fantaisie Mécanique (trombone, trumpet, piano, two percussionists)
Both are phenomenal and by renowned composers. Definitely worth a look. The Kurtág is published by Sikorski and the Unsuk Chin is published by Boosey & Hawkeds. Both are only available as rentals. A recording of Fantaisie Mécanique is readily available through amazon.com and you can hear several movements of Rückblick on Marco Blaauw's site (
www.marcoblaauw.com).