A "piano trio" is a musical ensemble consisting of three instruments: a piano, a violin, and a cello. This combination allows for a rich blend of harmonies and textures, making it a popular format in classical music. The piano provides a strong harmonic foundation, while the violin and cello add melodic lines and depth. Piano trios have been composed by many famous musicians, including Ludwig van Beethoven and Johannes Brahms. They often perform a variety of musical styles, from classical to contemporary, and are celebrated for their ability to create intimate and dynamic performances.