Complex sentence: While he was an undergraduate, King wrote and recorded "Everyone's Gone to the Moon" for Decca Records, which reached number 4 in the UK charts and number 17 in America in 1965.
Split into simpler sentences: While he was an undergraduate, King wrote and recorded "Everyone's Gone to the Moon" for Decca Records. It reached number 4 in the UK charts and number 17 in America in 1965.