Question: The Piano Concerto No. 1 in B-flat minor, Op. 23 was composed by which Russian composer of the romantic period, some of whose works are among the most popular music in the classical repertoire?
Sentence (from "Piano Concerto No. 1 (Tchaikovsky)"): 23, was composed by Pyotr Ilyich Tchaikovsky between November 1874 and February 1875.
Relevant evidence: No