Listen to Kaay Bai Sangu online. Kaay Bai Sangu is a Marathi language song and is sung by Usha Mangeshkar and Hridaynath Mangeshkar. Kaay Bai Sangu, from the album Anmol Gaani Usha Mangeshkar, was released in the year 2009. The duration of the song is 3:32. Download Marathi songs online from JioSaavn.