String Ensemble,String Trio Cello,Viola,Violin - Level 3 - Digital Download SKU: A0.1153649 Composed by Tchaikovsky, P. I. Arranged by Nick M Lacanski. Romantic Period. Score and parts. 7 pages. Theupperstaff #753912. Published by theupperstaff (A0.1153649). This trio (violin, viola and cello) was written in 1863 as an exercise in composition while Tchaikovsky was a student in Anton Rubinstein's composition classes at the St. Petersburg Conservatory. He was 23 years old. Thank you for looking.