When Chicago exploded onto the music scene with their stellar 1969 double-LP debut, Chicago Transit Authority, the band's innovative fusion of up-front horns in a rock 'n' roll context and impeccable pop sensibilities was an instant smash. Chicago rank among the all-time most successful American rock group. On their 30th album, and first new studio album in 10 years-the band's songwriting mastery and world-class musicianship shines on a collection of tracks ranging from signature ballads to funked-up grooves to solid rockers. Rhino. 2006.