Bollywood megastar Amitabh Bahchan managed to pleasantly surprise local train commuters in Mumbai and Saurabh Nimbkar who had featured on 'Aaj Ki Raat Zindagi', the TV show hosted by Big B.

Saurabh makes train travel enjoyable for commuters by strumming on his guitar, singing in order to raise money for cancer patients. However, the young man was accompanied by Amitabh Bachchan who also sang and clapped along, much to the delight of commuters.

T 2059 -Local from VT to Bhandup to support Saurabh, who sings in locals for charity to cancer .. sang with him .. pic.twitter.com/K3WiabhYU7

— Amitabh Bachchan (@SrBachchan) November 15, 2015

The veteran actortreated them to a live performance of his hit song, 'Rang Barse'. Immediately word started to travel and the Twitterati shared posts about Amitabh Bachchan's train travel. #BigBAurHeroKaSafar began trending.