Listen to Vaada Hai Kya online. Vaada Hai Kya is a Hindi language song and is sung by Kishore Kumar, Usha Mangeshkar and Bappi Lahiri. Vaada Hai Kya, from the album Happy Birthday Hit Of Mithun, was released in the year 2015. The duration of the song is 6:12. Download Hindi songs online from JioSaavn.