1976's Chicago X was another huge multi-platinum plus smash for Chicago. Featuring the original award winning line-up of Robert Lamm (lead vocals/keyboards), Peter Cetera (lead vocals/bass), Terry Kath (lead vocals/guitars), the legendary horns of Lee Loughnane (trumpet), Walter Parazaider (saxophone/woodwinds), James Pankow (trombone), Danny Seraphine (drums) and Laudir de Oliveira (percussion), Chicago X is undoubtedly one of their biggest selling albums of the late seventies and is also one of the most loved offerings in their stunning catalog.