Complex sentence: From 1991 through to 1999, Cohen contributed to BBC Radio 1's "Loose Talk" and "Songlines", of which he was co-creator, he also a recurring guest for BBC Radio 4's "Loose Ends".
Split into simpler sentences: From 1991 through to 1999, Cohen contributed to BBC Radio 1's "Loose Talk" and "Songlines", of which he was co-creator. He was also a recurring guest for BBC Radio 4's "Loose Ends".