[1] He was formerly the lead trumpet player and left sometime after the release of Rump Shaker but returned to the band in September 2005 for the band's appearance on the Jerry Lewis MDA Telethon, which happened to be lead singer Tim Maurer's last performance.

Although he did not become lead singer of Suburban Legends until 2005, he previously sang on "Brian and Vince Experience (The Rap)" on Origin Edition (on which he was the lead guitarist), "Desperate" from Suburban Legends, "Powerful Game" on Rump Shaker, and "Rose Tint My World."

As of 2012, Walker, Klemm, drummer Matt Olson, and former Suburban Legends bassist Chris Maurer currently perform in a humorous blues rock side project called Personal Satisfaction.

Walker makes an appearance alongside bandmate Brian Klemm in one of Big D and the Kids Table's several music videos for their cover of The Specials' "Little Bitch."

In addition to his work with Suburban Legends, Walker composed the score to 2014 independent British film, What Goes Up.