Below you will find some album Rihanna had collaborated at:

“Paper Trail” T.I
05. Live Your Life feat. Rihanna

“It Won’t Be Soon Before Long” Re-release  Maroon 5
15. If I Never See Your Face Again feat. Rihanna

“Ghetto Story” Cham
09. Boom Boom feat. Rihanna

“543″ Memphis Bleek
06. The One (f. Rihanna)