A piano trio is a group of piano and two other instruments, usually a violin and a cello, or a piece of music written for such a group. It is one of the most common forms found in classical chamber music .
The Walking Piano, also called the Big Piano by its creator, Remo Saraceni, is an oversized synthesizer. Merging dance, music, and play, it is played by the user's feet tapping the keys to make music. Versions of the piano have been installed in museums, children's hospitals, and other public places around the world.