Warren has played with a host of artists including Reg Lyndsay, Don Gibson, P.J Proby, Jimmie Little, Lee Conway, Laurie Allen and Karen O'Shea. He has played at the St Louis International Steel Guitar Convention twice and at Mt Isa and Darwin Country Music Festivals for many years.

Warren has played in the support group for Peter, Paul and Mary, Charlie Pride and John Mc Sweeny. He has a CD out there as well.Warren plays a D10 Zumsteel  guitar and is proficient on the C6th as well as E9th tuning.