Complex sentence: Rachmaninoff secured Medtner a tour of the United States and Canada in 1924; his recitals were often all-Medtner evenings consisting of sonatas interspersed with songs and shorter pieces.
Split into simpler sentences: Rachmaninoff secured Medtner a tour of the United States and Canada in 1924. His recitals were often all-Medtner evenings consisting of sonatas interspersed with songs and shorter pieces.