Who sang the song "SOS" on an album released on April 10, 2006? 
SOS (Rihanna song): "SOS" is a song by Barbadian singer Rihanna from her second studio album "A Girl like Me" (2006). A Girl like Me (Rihanna album):  It was released on April 10, 2006 by Def Jam Recordings.
Rihanna