John O'Grady is an Australian bassist who performed as a musician on It's a Wiggly Wiggly World!, LIVE Hot Potatoes!, Dorothy the Dinosaur's Memory Book, and the title track from You Make Me Feel Like Dancing, and also appeared as a musician in the Getting Strong! video. O'Grady plays both double and electric bass and has performed with several Sydney based-orchestras and occasionally with The Cockroaches.