Complex sentence: The bandmembers of Led Zeppelin actually showed up in the studio during Sabbath Bloody Sabbaths recording, with drummer John Bonham wanting to play on "Sabbra Cadabra", but Sabbath wanted to play material other than their own for the occasion.
Split into simpler sentences: The bandmembers of Led Zeppelin actually showed up in the studio during Sabbath Bloody Sabbaths recording. Drummer John Bonham wanted to play on "Sabbra Cadabra" but Sabbath wanted to play material other than their own for the occasion.