This transcription of Edward Elgar's Romance Opus 62 (originally for Bassoon) is by Eric Wilson for Bb Euphonium and Piano. The solo part is supplied in treble and bass clef.
First Book of Trombone Solos
Trombone Concertino in Bb (trombone and piano) (bass clef)
Concertante for Tenor Trombone (treble clef) and Piano