Songs which travels different genres

I am going to list some 3 songs which travels different genres within the 5 min seemlessly and makes the listening very very interesting...

1. Siriya Paravai from Andha Oru Nimidam; Music By Ilayaraja
URL: http://www.youtube.com/watch?v=c_KFfFVDRuE

What a beautiful lyrics by Vairamuthu in this song... & dont miss SPB's laugh. So addictive.

2. Ooh La La La from Minsara Kanavu; Music By A R Rahman
URL: http://www.youtube.com/watch?v=XHnwbugWG7g

I believe that Vairamuthu did not liked the idea of the Oh lalala song and both Rahman and Rajeev Menon went to the poet's home to convince him.

3. Buck Buck Buck Maada Pura from Paarthiban Kanavu; Music by Vidyasagar
URL : http://www.raaga.com/channels/tamil/moviedetail.asp?mid=T0000482

Vidyasagar started with B & W period music for this song and moved to modern music. Good work and different singing pattern made this attempt fruitful.

By the way, let me know if there is any similar attempt by any other musicians.