The band 10cc is one of my favourite bands. They have these weird structured songs with rhythm changes or entirely different musical settings in the same song. I see them as a sort of Frank Zappa band in pop-music. I like the way how their music sounds fun and in a weird way optimistic. They have some great vocal harmonies going on in more than one of their songs and of course, check out the classic: I'm not in love. Have a good time.