Tenor Trombone,Trombone Solo - Level 4 - Digital Download SKU: A0.1258496 Composed by Felix Alexandre Guilmant. Arranged by Robert B Oldroyd. 21st Century,Classical,Contemporary. Individual part. 18 pages. Robert Oldroyd Music #851751. Published by Robert Oldroyd Music (A0.1258496). A new arrangement of a classical solo trombone piece. The piano part of Guilmant’s Morceau Symphonique has been recreated for organ. An additional euphonium part in all bass clef has been included too.