Complex sentence: The upbeat "Tell No Lies" featured a more mainstream pop sound than was customary for Spoons, while "Romantic Traffic" was a downtempo song with adult contemporary leanings that would become the group's most enduring hit.
Split into simpler sentences: The upbeat "Tell No Lies" featured a more mainstream pop sound than was customary for Spoons, while "Romantic Traffic" was a downtempo song with adult contemporary leanings. "Traffic" would become the group's most enduring hit.