Listen to Nani Bai Ka Mahera online. Nani Bai Ka Mahera is a Rajasthani language song and is sung by Lachchu Maharaj. Nani Bai Ka Mahera, from the album Nani Bai Ka Mahera, was released in the year 1998. The duration of the song is 59:16. Download Rajasthani songs online from JioSaavn.