The music of Karan Johar's "Kaal" has generated a good deal of curiosity in the market.

Speculation has it that out of the six tracks that have been planned, only two will actually be seen in the adventurous thriller. The rest will be shot as music videos as part of the pre-release promotional strategy for the film, reports Bollywood Trade.

"That's not entirely true, though two of the songs will be definitely seen in the film, one of them being the background track and the second being the background theme song," says music director Salim of the Salim-Sulaiman pair for whom "Kaal" is a major breakthrough in the big league of reckoned filmmakers.

According to Salim, each of the songs in the album will have a different concept with a couple of songs being re-mixes of famous English numbers, for which the rights have been acquired, and two other songs being Punjabi tracks.

"The idea is the brainchild of Karan Johar and director Soham Shah, who decided to have a different concept for each song," says Salim.