I was just watching Dennis Edwards in one of his first televised outings with the Temptations on the TCB special and was amazed just how outstanding he performed and did not miss a beat.

Do you have some 'new' group members who replaced someone else as the lead [[or a primary) singer who you thought...."Hey, ain't nothing like the real thing; however, this person is really going to work out."?

Some of the Motown acts [[and yes, they might have later left Motown) whose new lead/primary singer impressed me are:

Dennis Edwards [[Temptations)
Jean Terrell [[Supremes)
Theo Peoples [[Four Tops) comes to mind, not from a recording aspect, but just how well he seemed to remain true to his style while respecting the great Levi Stubbs.

To keep it simple, I am not necessarily referring to those new replacements were primarily regulated to being background singers.