Complex sentence: These quartets are among Haydn's most ambitious chamber works, deviating more than previous quartets from the expected sonata form, and emphasizing thematic continuity, seamlessly and continually passing motives from one instrument to another (Grave 312).
Split into simpler sentences: These quartets are among Haydn's most ambitious chamber works. They deviate more than previous quartets from the expected sonata form, and Haydn emphasized thematic continuity, seamlessly and continually passing motives from one instrument to another (Grave 312).