Listen to Gagan Intro online. Gagan Intro is a Malayalam language song and is sung by Kunchacko Boban, Manoj K. Jayan, Krishna Sanker, Shamili and Mia. Gagan Intro, from the album Valleem Thetti Pulleem Thetti (OST), was released in the year 2016. The duration of the song is 1:26. Download Malayalam songs online from JioSaavn.