Regarding the Marvin & Tammi album, "Easy," I've read a lot about whether Tammi's vocals or Valerie Simpson's vocals were used on the album.

By this point, Tammi was becoming more and more crippled by a terminal brain tumor. There has been a lot of discussion regarding the vocals on the album, including:

- Tammi recorded the vocals, but Valerie dubbed hers in
- Tammi did NOT record the vocals, and all vocals were done by Valerie
- Valerie did NOT record the vocals, and all vocals were done by Tammi
- Most vocals were done by Valerie, but some were done by Tammi

Even Marvin and Valerie themselves have had trouble recollecting accurate information over the years. Marvin has said that Valerie recorded most of the vocals, but Valerie has said, repeatedly, that those vocals are not hers. But later, she said she sang with Marvin, but Tammi was brought in to dub her vocals later.

Does anyone have any informations regarding these sessions? I have always thought those vocals belonged to Tammi, but there is heavy information out there suggesting otherwise...