Produced by Shobha Kapoor and Ekta Kapoor, KAS is directed by first timer Partho Mitra. The opening track 'Seene Mein Dil' is soothing, pleasant and extremely likeable— is an ear-friendly love song by ever so efficient pairing of Udit Narayan and Alka Yagnik.

The album contains a solo version of this song by Alka Yagnik as well.

Instead of an original, a remix version of 'Aadat Ho Chuki Hai' comes next in the album. A track (remixed by DJ Akbar Sami), one is not quite hopeful of the original as well that comes later in the album. Pyaar-Mohabbat returns with a bang in the form of 'Tere Dil Ka Rishta', a solo by Sonu Nigam that gets the album back in the groove.

A remix of 'Bandh Mere Pairon Mein' arrives before its original. Choodi, kangan, jhumka, jhoomar, payalia, Reshammiya, Sameer – and you have all the ingredients ready for a tried and tested recipe.

The trouble in the case of 'Bandh Mere Pairon Mein' is its all so predictable tune being so similar to Reshammiya's own 'Saawariya Re O Saawariya' from 'Kahin Pyaar Na Ho Jaaye'.

Sonu Nigam and Sunidhi Chauhan are all excited and spirited with Jayesh providing outside support. The album seems to be going in a see-saw mode with songs alternating between melodious and dance track.

Hence it is the turn of a melodious track to come up next, which incidentally is the title song 'Koi Aap Sa'.

A Sonu Nigam-Alka Yagnik song, it is good to hear but lacks the effect that one expected from the title song of a romantic movie. Some good melodious music makes 'Kabhi Na Sukoon Aaya' a pleasant sounding number.

In the end, KAS turns out to be an average album with 3-4 tunes that sound good.