HK Gruber
composer, conductor, soloist
- Busking for Trumpet, Accordion, Banjo and String Orchestra (2007)
- Frankenstein!! A Pandemonium for Chansonnier and Orchestra (Liverpool 1978) (in English)
- Charivari, an Austrian Journal for orchestra (1981)
- Rough Music, Concerto for Percussion and Orchestra (1982-1983)
- Concerto for Trumpet and Orchestra (1998-1999) “Aerial”
- MOB Stücke op. 20 for Trumpet and Chamber Orchestra
- Dancing in the Dark (2002)
- Concerto for Violoncello and Orchestra (1989)
- Concerto for Chamber Orchestra (2001) “Zeitfluren (Timescapes)”
- Manhattan Broadcasts for Orchestra (1962-1964)
- Exposed Throat for Trumpet (2000)
- Zeitstimmung (Time Shadow) (Vienna 1997)
- Violin Concerto No. 2, "Nebelsteinmusik"
- Violin Concerto No. 1, "… aus schatten duft gewebt"
- Tango Fragment (2020)
- into the open... for Percussion and Orchestra (2010)