Listen to Kaay Bai Sangu online. Kaay Bai Sangu is a Marathi language song and is sung by Usha Mangeshkar. Kaay Bai Sangu, from the album Usha Mangeshkar - Anmol Gaani, was released in the year 2009. The duration of the song is 3:33. Download Marathi songs online from JioSaavn.