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"): He was the first Russian composer whose music made a lasting impression internationally, bolstered by his appearances as a guest conductor in Europe and the United States.
Relevant evidence: No