Original sentence: Morrissey's lovelorn tales of alienation found an audience amongst youth culture bored by the ubiquitous synthesizer-pop bands of the early 1980s while Marr's complex melodies helped return guitar-based music to popularity in Britain
Edited sentence: Morrissey's lovelorn tales of alienation found an audience amongst youth culture bored by the ubiquitous synthesizer-pop bands of the early 1980s, while Marr's complex melodies helped return guitar-based music to popularity in Britain