Answer
Rimsky-Korsakov's musical style was heavily influenced by the works of Hector Berlioz and Franz Liszt. Berlioz's innovative use of orchestration and Liszt's groundbreaking harmonic and pianistic techniques had a profound impact on Rimsky-Korsakov's own compositional approach. He incorporated their influence into his music, resulting in a unique blend of orchestral color and technical virtuosity that became a hallmark of his compositions.