Listen to Aawaz Do Humko (Happy) - Lofi online. Aawaz Do Humko (Happy) - Lofi is a Hindi language song and is sung by Lata Mangeshkar, Udit Narayan and The Keychangers. Aawaz Do Humko (Happy) - Lofi, from the album Calm Bollywood Lofi, was released in the year 2022. The duration of the song is 3:04. Download Hindi songs online from JioSaavn.