Davide Martello, also known as Klavierkunst (born 1 November 1981 in Lörrach in the southwest of Baden-Württemberg), is a German pianist of Italian descent.

He is known for travelling around conflict zones to play his baby grand piano, which he tows behind his bicycle using a powered trailer.

Over Christmas 2012 he played in Afghanistan, for the soldiers in Mazar-i-Sharif, Kunduz and Termez (Uzbekistan).

Later that year in the aftermath of the November 2015 Paris attacks, on 14 November 2015, Martello rode his grand piano by bike to the Bataclan theatre (the venue where 89 people were killed in a terror attack) and started playing "Imagine" from John Lennon in tribute to the victims of the Paris attacks for a crowd gathered outside the hall.

[1] In June 2020, he played in Minneapolis, Minnesota during protests after the murder of George Floyd.