The guitarist who recorded the first live songs on Intermission was a member of what other band?
Intermission (Dio album):  The live songs were recorded with guitarist Vivian Campbell during the first leg of the Sacred Heart tour. Vivian Campbell:  He came to prominence in the early 1980s as a member of Dio, and has been a member of Def Leppard since 1992 (replacing Steve Clark).
Def Leppard