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 "Pyotr Ilyich Tchaikovsky"): Pyotr Ilyich Tchaikovsky ( ; Russian: Пётр Ильи́ч Чайко́вский ; 25 April/7 May 1840 – 25 October/6 November 1893), often anglicized as Peter Ilich Tchaikovsky, was a Russian composer of the romantic period, some of whose works are among the most popular music in the classical repertoire.
Relevant evidence: Yes