The idea of busking is as commonplace in the West as a group of bhajan singers is in a Mumbai local. But it's rare to find a person on an Indian street singing songs with a guitar slung around his shoulder. Yet, the genesis of acoustic outfit Rubber Band goes back to the day of the Mumbai Marathon in 2008, when businessman Rohit Chabria sang guitar-based songs with a bucket placed in front of him, hoping to collect money for an NGO called Children's Movement for Civic Awareness (CMCA).

"The next year, I asked some of my school friends who play music to join me. And we decided on the name Rubber Band because we can stretch ourselves to accommodate any number of people. We have been performing at the marathon for eight years now, and sometimes have 20 to 40 kids joining us," Chabria says.