Mithoon first started out in the Mahesh Bhatt camp adapting popular Pakistani pop songs into Hindi movies most notably Woh Lamhe from the movie Zeher. Since then he has moved on to composing his own music as a guest composer in movies like Bas Ek Pal and Anwar. Although the movies did not do well, the music was well received and Mithoon's work was appreciated. In 2006 Mithoon replaced Himesh Reshammiya for composing the soundtrack for the movie Aggar. Earlier his full movie album "The Train" marked his very first full album composition for a Hindi movie. During his days in the Bhatt camp, Mithoon forged a good friendship with Pakistani Pop Star Atif Aslam resulting in their joint composition for Atif's new album Doorie along with Sachin Gupta. Primarily a music director, Mithoon made his singing debut with The Train. He has sung two songs in the album – ‘Woh Ajnabee’ and 'Mausam'. Various remixes of these songs have also been made. 'The Train's music album has been positively received & the songs sung by Mithoon are big hits. Mithoon eerily sounds like KK and Atif Aslam. His singing style, as of this album, is similar to that of Atif Aslam. List of Hit Songs as Music Director/Singer Woh Lamhe - Zeher (2005) Tere Bin - Bas Ek Pal (2006) Bas Ek Pal - Bas Ek Pal (2006) Maula Mere - Anwar (2006) Javeda Zindagi - Anwar (2006) Kuch Is Tarah - Doorie (2007) Woh Ajnabee - The Train : Some lines should never be crossed (2007) Mausam - The Train : Some lines should never be crossed (2007) Nachle- Aggar (2007) Ke Bin Tere - Aggar (2007) Paas Aaya Kyon - Aggar (2007)