Serenade op.37 The Serenade, Op. 37 was conceived for Cello with Piano accompaniment, but later in life the composer scored the work for the solo instrument with orchestra. The Trombone world knows Rimsky-Korsakov for his Concerto with Band. The Serenade has a very similar mood to the slow movement of the Concerto. Its beautiful lilting rhythm combined with a wonderful melody makes this work very worthwhile. Mr. Sauer brings a true Trombone feel to the work for advanced performers.