After the raunchy dance number Dreamum Wakeupum and a lavani in the song Sava Dollar, Rani Mukerji has gone a step further in her upcoming film Aiyyaa. The actress has done some sensual belly dancing moves in the latest track, Aga Bai, in the film. Apparently, Rani trained herself in belly dancing to lend authenticity to the number. Music director Amit Trivedi says that creating three different flavours was deliberate keeping the theme of the film in mind. “Rani is shown as a middle-class Maharashtrian girl, who has her own dreams and wishes. The songs portray her fantasies.” Amit reveals that Rani made it a point to be present when the tracks were being created. “She gave her inputs and took keen interest in the songs. The songs have caught up in a big way. In fact, the word Dreamum is the latest lingo used by people.