What does Kamal do in this song?

Our nanny Maria, we hired for Maya is Costa Rican and she takes good care of Maya.

Maya likes the song Vennilave from Vettayadu Vilayadu. So I am showing the video of the song to Maya when she walks by and sees the video.

http://www.youtube.com/watch?v=k7TF9z0_nyo

Maria: Oh so this is the singer who sings this beautiful song that Maya likes.
Me: This IS the song, but this guy (pointing to Kamalhassan) isnt singing it, some professional singer is lending his voice.
Maria: Oh
At this point, there is a dance sequence step with some black dudes dancing
Maria: Is he dancing in this group?
Me: Uhhhh no, he isn't dancing (pointing to Kamal talking to Jyothika eating), THAT is him
Maria: Okkkk....
A few minutes later there are some black girls dancing
Maria: Is the girl dancing here?
Me: No, THAT (pointing to Jyothika walking into her room to sleep) is the heroine, isn't she beautiful?
Maria: Uh-huh...so what does Kamaa...Kamaa..
Me: Kamalhassan...he is a genius
Maria: Yeah what does he do in this song?
Me: He just walks around showing the heroine around NY, but you should check out his acting in one movie where he plays an old lady, a midget and as a white guy
Maria (sounding unimpressed): Ok
Me: Or I should probably tell you about our sensational dancer called Simbu...