Complex sentence: On ABC Willey and Garrett claimed, "(they) don't think that (they)'re that hot," contrary to the lyrics in their song, and that they are "open" to a career as songwriters.
Split into simpler sentences: On ABC Willey and Garrett claimed, "(they) don't think that (they)'re that hot" contrary to the lyrics in their song. Additionally they stated they are "open" to a career as songwriters.