Complex sentence: When it was offered to the Tremeloes as a potential single, they rejected it and it was recorded by the group Amen Corner as their debut single for their new record label Immediate Records and produced by Shel Talmy.
Split into simpler sentences: When it was offered to The Tremeloes as a potential single, they rejected it. It was recorded by the group Amen Corner as their debut single for their new record label Immediate Records and was produced by Shel Talmy.