Complex sentence: Ham is often credited as being one of the earliest purveyors of the power pop genre, but his most widespread effect in popular music is the ballad "Without You," written with Badfinger bandmate Tom Evans.
Split into simpler sentences: Ham is often credited as being one of the earliest purveyors of the power pop genre. His most widespread effect in popular music is the ballad "Without You," written with Badfinger bandmate Tom Evans.