Home", also gave Cetera his first songwriting credit. (Kal David and Marty Grebb also are credited on the song.) Adding to his early recording experience, Cetera played electric bass on Chicago folk singer and songwriter Dick Campbell's album Dick Campbell Plays Where It's At, released in 1966 on Mercury Records. When The Exceptions decided to move toward a more psychedelic sound, Cetera left; the band changed its name to Aorta, and became one of the first psychedelic groups on a major label. Professional music career History Tenure in Chicago In December 1967, Cetera arrived early for a show to watch a band called The Big Thing. Impressed by their use of a horn section combined with rock and roll, Cetera left The Exceptions to join The Big Thing within two weeks. The Big Thing, which soon changed its name to The Chicago Transit Authority (and eventually shortened it to Chicago), released its self-titled debut album Chicago Transit Authority on Columbia Records in 1969. Cetera shared lead vocals on three of the eleven songs on the album: "Questions 67 & 68", "I'm a Man", and "Someday", his tenor voice complementing the baritone voices of the two other lead singers in the group, keyboardist Robert Lamm and guitarist Terry Kath. The follow-up album, Chicago, vaulted the band to popular status throughout the world. The song "25 or 6 to 4" was the first major hit single with Cetera singing lead vocals. Chicago is also notable for featuring Cetera's first songwriting effort with the group, "Where Do We Go From Here?" As the 1970s progressed, Cetera became a more prolific songwriter for the group, contributing the songs "Wishing You Were Here" and "Happy Man" to the 1974 album Chicago VII. "Wishing You Were Here" featured vocals by members of The Beach Boys, and reached number eleven on the charts. "Happy Man" was, according to Chicago producer James Guercio, "a Number 1 record that was never released as a single." Cetera's biggest singing and songwriting accomplishment with Chicago came in 1976 with the ballad "If You Leave Me Now", from Chicago X. It was the group's first number one single in the United States, also reaching number one on charts worldwide and certified Gold and Platinum by the Recording Industry Association of America (RIAA). The song won a Grammy Award for Chicago, the group's only such award to date, for the 1976 Best Pop