Listen to Thumbprint: XXI. Thumbprint online. Thumbprint: XXI. Thumbprint is an English language song and is sung by Kamala Sankaram, Manu Narayan and Phyllis Pancella. Thumbprint: XXI. Thumbprint, from the album Sankaram: Thumbprint, was released in the year 2019. The duration of the song is 4:38. Download English songs online from JioSaavn.