Listen to Mera Laung Gwacha online. Mera Laung Gwacha is a Bengali language song and is sung by Usha Uthup. Mera Laung Gwacha, from the album Dilon Nache Punjab - Usha Uthup, was released in the year 1996. The duration of the song is 4:53. Download Bengali songs online from JioSaavn.