Canadian teen-pop singer Justin Bieber, Irish rockers U2 and Barbadian R&B artist Rihanna have signed on to donate songs to a digital charity album to benefit the victims of Japan’s March 11 earthquake and tsunami.
Dance-pop diva Lady Gaga—who already designed a Japan Prayer Bracelet to aid relief efforts—is currently in talks to contribute to the album as well, along with rapper Nicki Minaj and Jersey rockers Bon Jovi.
