With Ronnie James Dio on vocals. (Mask of the Deceiver? I believe.)
Love Dio!
Yep that was exactly the one; R.J. Dio also did "To Live for the King". Steve Walsh of Kansas sang on "How Can you Live", David Pack (former lead singer of Ambrosia) did vocals on "Ground Zero", and Jeff Pollard (ex vocalist for Leroux - known for their 70's power ballad,"New Orleans Lady") sang on "Just One Way".
Kansas had at various times toured with Ambrosia and with Leroux, which is how Livgren knew Pollard and Pack. Davey Moire did vocals on "Down to the Core", while Livgren himself (not usually a vocalist) dueted with Mylon Lefevre on "Whiskey Seed".