Complex sentence: Rocks is a television soundtrack based on the animated television series "Schoolhouse Rock!", released by Atlantic Records in 1996 and contains all 15 tracks which were covers of songs from the show sung by popular music artists.
Split into simpler sentences: Rocks is a tribute album based on the animated television series "Schoolhouse Rock!" and released by Atlantic Records in 1996. It contains fifteen tracks which are covers of songs from the show sung by popular music artists.