Rihanna had a bit of a singsong at the March Madness Festival in Indianapolis last night and during the singsong she 'premiered' the full version of that 'American Oxygen' song.
The song she shared a bit of right here.
As Pitchfork points out she also did 'FourFiveSeconds' and the timeless 'Bitch Better Have My Money', and you can watch the full set below if you have a spare 36 minutes ('American Oxygen' starts at the 2:30 minute mark):
http://www.youtube.com/watch?v=I_363lBa9xk
Nice coat anyway.