[1] He attended Ballarat Grammar School where he learned saxophone, he described his performances in the local area, "a really bad jazz rock fusion gig.
"[2] In the early 1980s Valentine relocated to Melbourne to attend university, he later recalled "First year I spent studying, and then I started getting gigs, and I didn't pay much attention to uni after that because I wanted to be a jazz musician.
[4][5] Valentine, on saxophone, and Kate Ceberano (of I'm Talking), on lead vocals, were members of Diana Boss and the Extremes, a covers band which performed The Supremes material.
"[3] Valentine joined Models in late 1984, when they relocated to Sydney and he played saxophone with them until 1987, the group broke up in June of the following year.
[citation needed] At the end of 2023, it was announced that Valentine would return to the afternoon program, with Craig Reucassel taking over the breakfast show.