Without You (Piano Verison) [Made Famous By David Guetta and Usher]
 作词 : David Guetta/Frederic Jean Riesterer/Richard Preston Jr Butler/Taio Cruz/Usher Raymond/Giorgio Tuinfort
 作曲 : David Guetta/Frederic Jean Riesterer/Richard Preston Jr Butler/Taio Cruz/Usher Raymond/Giorgio Tuinfort