The Piano Trio No. 1 in B♭ major, Op. 21 (B. 51), is a piano trio by Antonín Dvořák, completed in 1875.[1] It is the first out of the four surviving piano trios, preceded by two works from 1871 to 1872 that Dvořák destroyed (B. 25 and B. 26).[2]
The composition consists of four movements in the classical tradition:
Performance can vary from 31 to 37 minutes.[2]
The piano trio was written in the spring of 1875; the autograph dates the completion date to 14 May 1875. The premiere was held on 17 February 1877 at a concert in Prague.[2]