yea, right....
then I guess Marvin Gaye was an Andante, an Original and on Try It Baby a Temptation...
Not!
There have been a number of groups where the most prominent, dominant lead singer would
sometimes fall back into the group on vocals to sing harmonies or back another singer would could do
leads, i.e. Barbara Harris in the Toys, Earlean McCrea in The Cookies,& Patty Hamilton in the Lovelites,
but Aretha has been basically a solo act since she was a kid. You've have a better case with somebody
like George Clinton who really relied on every feather under his wings...