Question: The band Clock features P.J. Smith and a man that replaced what Def Leppard member?
Sentence (from "Clock (band)"): Clock is a band featuring Def Leppard guitarist Vivian Campbell and P.J. Smith, who sang backing vocals on Def Leppard's cover of the Sweet song "Action" on Def Leppard's "Retro Active" (1993) album.
Relevant evidence: Yes