One of the biggest hits of the year was from the film 'Love Aaj Kal'. It has an electrifying start with the strumming of the guitar and is an amalgamation of a hit Punjabi pop song by singer Jazzy B and Pritam Chakraborty's composition. Sung by Neeraj Shridhar, "Aahun aahun" keeps juggling between the two genres and sets the mood.