Aaj Ki Raat

The track falls into the genre of 1980s retro-disco. According to the script of the movie, the song was to be included with Shahrukh Khan, Priyanka Chopra and Isha Koppikar dancing at a private underworld party. Director Farhan Akhtar suggested using a retro rock number. Shankar–Ehsaan–Loy got together with director Farhan Akhtar, who himself was a music enthusiast, to come up with the track which had elements of music styles they listened to in the late 1970s and 1980s. The song fits well in the movie, as the movie in itself is a retro story presented in a modern style.[2]

Ehsaan stated that the song was influenced by the synthpop music of the late 1970s and 1980s, including musicians such as Ultravox and Cerrone.[3]

Live drums were used for the song and Ehsaan experimented with thin guitar riff's to get the twanginess of The Ventures & The Shadows.

The song was performed by Alisha, Mahalaxmi Iyer & Sonu Nigam.

The song was well received by the critics. It was featured in the 10 Dances that Made You Flock the Theatres list of Bollywood Hungama. It also did well in the music charts[4] and climbed up later on.[5] The Don soundtrack album became the best-selling Bollywood soundtrack albums of 2006, with 1.5 million units sold in India.[6]

A version of the song was included in the Academy Award-winning soundtrack Slumdog Millionaire (2008) by A. R. Rahman.[8] The song features in the climax of the film, when the gangsters and mafia boss Javed dance to the tune while "Aaj Ki Raat" plays on the TV, though it shows the music video of Rahman's "Fanaa" from Yuva (2004) being played.[9] The Slumdog Millionaire soundtrack album sold over 2 million units worldwide.[10]