I would make an R&B vocal group consisting of:
1. Usher
2. Montell Jordan
3. Ginuwine
4. Sisqó (from Dru Hill)
But I would probably have them sing new original songs in a very retro 1960s style. Or at least do that for a concept album with an accompanying tour. I think all four have great singing chops, each has their own unique voice, and none of them would upstage the others- except maybe Usher if you go by both talent and popularity.
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