Mark Denis Lizotte is an American-born Australian singer-songwriter and musician, who has released material under the name Diesel, Johnny Diesel, as leader of band Johnny Diesel & the Injectors, and as a solo performer, as well as under his birth name. Two of his albums reached No. 1 on the Australian Recording Industry Association (ARIA) Albums Charts, Hepfidelity in 1992 and The Lobbyist in 1993.

James Dixon Barnes is a Scottish-born Australian rock singer. His career, both as a solo performer and as the lead vocalist with the rock band Cold Chisel, has made him one of the most popular and best-selling Australian music artists of all time.