Ratu was an Indonesian music duo formed in 1999 with Maia Estianty, then the wife of musician Ahmad Dhani, on instruments and Pinkan Mambo on vocals. Ratu entered the Indonesian musical scene with the
Mulan Kwok and Maia Ahmad
The vocalist-musician duo concept for Ratu was based on that of the Swedish band Roxette.
Maia formed a new musical group based on her own name, Duo Maia, after Ratu dissolved.
Dhani continued to work with girl groups after Ratu.