Betty Kelly was already friends with Martha & Roz and she could wear Annettes' stage clothes with little adjustment. I think all the groups records sounded the best when it was the actual groups on the record. I don't like "perfection", I like "real". So what if the Marvelettes were not "harmonius" they were real & GREAT LIVE, and to me LIVE is where it counts. Motown was a business & they wanted those groups on the road making money, that's why around '66 they only wanted to fly the lead singer back to Detroit to record. They had flown Martha Roz & Annette back for the Heatwave LP, as they were really out there continually on the road at that time.