Aamir Khan and his wife have sung a song together for Taare Zameen Par. There is a song in the film called 'Kya Hai Problem, Kyun Mera Bheja Kam'. It is a funny fusion song which has elements of hard rock and rap, which the husband and wife duo has belted out together.

Music director Shankar, Ehsaan and Loy, who have composed the music for the film, confirmed the fact that Kiran and Aamir have sung a song in the movie. The song is in the form of a dialogue, which has rhythm to it, according to them. It is supposed to be a fun-filled song that is very apt for generation next. Incidentally, the song has been sung not just by Aamir and Kiran but also singers like Bugs Bhargav, Shankar Sachdev, Raj Gopal Iyer, Ravi Khanwilkar, Loy, Ram Madhvani and Shankar, have lent their voice to the song. According to Shankar, he felt that Kiran's voice was apt for the number. He feels that Kiran can be a very good singer as she has a very soft and velvety voice. It was just right for the number. There is a childlike quality to the voices of Aamir and Kiran he felt. 'Bheja Kum' is a song for children and it seems that children are quite enjoying listening to the number. According to Shankar, the song is the highlight of Taare Zameen Par.