Complex sentence: This album fulfilled the band's contract with Columbia Records, after which the band went on hiatus until 1971 when they reunited with Skip Spence and Bob Mosley to record the reunion album, "20 Granite Creek".
Split into simpler sentences: This album fulfilled the band's contract with Columbia Records. After completing this album, the band went on hiatus until 1971 when they reunited with Skip Spence and Bob Mosley to record the reunion album, "20 Granite Creek".