Senegalese-American singer Akon, who has sung "Chammak challo" for Shah Rukh Khan's upcoming film "RA.One", had no problems voicing the Hindi lyrics, revealed composer Shekhar Ravjiani of the duo Vishal- Shekhar, who have composed the song.

"It was really easy for Akon. When he came to the studio and we told him that he would have to sing in Hindi too, he got really excited.

Once he heard the lines, he started singing fluently. It took him only three-four hours to learn...he picked up everything so well, " said Shekhar.

The music of the film has beem released and "Chammak challo" has already caught the fancy of music lovers.