Megastar Amitabh Bachchan, who at 75 continues to experiment with new things, has sung an A-Capella song. "The many expressions for the A-Capella number I sang last night and shot today. A-Capella, where the entire song is done by one voice...See it soon," Big B captioned a collage of photographs featuring his many expressions, on Twitter. He recorded the song in the wee hours of Tuesday.

T 2591 - The many expressions for the ACAPELLA number I sang last night and shot today .. acapella, where the entire song is done by one voice - singing orchestra sounds .. all .. see it soon !!! pic.twitter.com/XfaHEKe3YB