Complex sentence: As one of the most celebrated piano interpreters of Chopin, Debussy and Schumann, Cortot made editions of both those composers' music, which were notable for his own meticulous commentary on technical problems and matters of interpretation.
Split into simpler sentences: As one of the most celebrated piano interpreters of Chopin, Debussy and Schumann, Cortot produced editions of all of those composers' music. His editions were notable for their inclusion of meticulous commentary on technical problems and matters of interpretation.