In the wake of a terrorist massacre in Paris that was carried out by ISIS extremists, some are using the tragedy to renew calls for peace and love amongst one another after the four separate attacks claimed 129 lives Friday.

The site that saw a large portion of the brutal massacre, Bataclan Concert Hall, became a place of mourning after the attacks there. However, the day following the attacks saw an unnamed pianist setting up outside with a simple peace sign drawn on his piano. It was here where he played the famous John Lennon tune, Imagine, which yearns for peace throughout the world.

Watch the tribute to the victims and subtle prayer for peace below. Nous Sommes Paris.