As mourners lined up to leave flowers and candles outside Paris' Bataclan, where at least 80 people were killed during a terrorist attack Friday, a solitary man played John Lennon's Imagine on a piano, the Guardian reports. According to the BBC, a small crowd gathered to listen to Davide Martello play the piano attached to his bicycle outside the music venue on Saturday. Martello made a similar gesture at the site of the Charlie Hebdo attack and has played during protests and other events in Ukraine, Istanbul, and Afghanistan. At least 127 are dead and many, many more injured following a string of shootings and explosions in Paris. (More Bataclan stories.)