Complex sentence: Behind the Music that Sucks, a parody of VH1's biography show Behind the Music, is an ongoing series of comic pieces produced by, and appearing on, Heavy.com, a broadband entertainment website.
Split into simpler sentences: Behind the Music that Sucks is an ongoing parody series of VH1's biography show Behind the Music. It is produced by, and appears on, Heavy.com, a broadband entertainment website.