a small life after all

Someone from Def Leppard is on television talking about canceling shows in Canada and I think Wisconsin and pushing some music-related product available for sale here in Japan. And explaining the meaning of "out of sight, out of mind" as it pertains to a certain Eighties er rock band with a one-armed drummer.

When did they acquire a second lead singer? And why is a band I remember not enjoying in high school intruding on a business trip in my very early forties?