Complex sentence: Many of the Second Invasion artists started their careers in the punk era and desired to bring change to wider audience, resulting in music that, while having no specific sound, was characterized by a risk-taking spirit within the context of pop music.
Split into simpler sentences: Many of the Second Invasion artists started their careers in the punk era and desired to bring change to wider audience. This resulted in music that while having no specific sound was characterized by a risk taking spirit within the context of pop music.