Here are some audio recordings of original compositions and recent performances.

Andy Rozsa, A Grey, Rainy Day (5:57, 6.7MB MP3)
       performed by the Cleveland Chamber Symphony, Ed London, conductor

Ralph Vaughn-Williams, Concerto for Tuba, Movement 1 (4:50, 5.5MB MP3)

Ralph Vaughn-Williams, Concerto for Tuba, Movement 2 (4:43, 5.4MB MP3)

Ralph Vaughn-Williams, Concerto for Tuba, Movement 3 (3:14, 3.7MB MP3)

       Brett Rowe, accompanist

Eric Ewazen, Ballade for Bass Trombone and String Orchestra, Portion 1 (3:04, 3.5MB MP3)

Eric Ewazen, Ballade for Bass Trombone and String Orchestra, Portion 2 (4:14, 4.8MB MP3)

       Brett Rowe, accompanist

G. P. Telemann, Sonata in F Minor, Movement 3 (1:39, 1.9MB MP3)

G. P. Telemann, Sonata in F Minor, Movement 4 (1:43, 1.9MB MP3)

       Brett Rowe, accompanist

Eugene Bozza, New Orleans [portion] (2:27, 3.2MB MP3)

       Anne-Marie Rozsa, accompanist