This note added 5/22/2008: Here are the lyrics and my translation of this song.
An interesting use of accents when using the words 'can't' and 'dance' in this trailer. The 'dance' is said in the American English accent, the 'can't' in the British English accent. The outcome is tolerable Hinglish nevertheless, so I doubt it will hurt the soundtrack. Hopefully the dialogs in the film with varying English accents will not ruin things (like they did to an extent with Madhuri Dixit using the word 'dance' in Aaja Nachle (2007)).
The soundtrack to the film releases in three days (May 20)! Yay! Here I go again with my peak of inflated expectations.