Complex sentence: The record was not a financial success, but it remained Garcia's favorite, as he said in an interview in the late 1980s: The record I worked hardest at and liked best was "Cats Under the Stars".
Split into simpler sentences: The record was not a financial success, but remained Garcia's favorite recording. Garcia discussed the LP in an interview in the late 1980s: The record I worked hardest at and liked best was "Cats Under the Stars".