A piano trio is a type of chamber music. Its most common instrumentation is violin, viola, and piano.

A piano trio is a genre of chamber music that typically consists of three instrumentalists: a violinist, a cellist, and a pianist. The violin, viola, and piano combination you mentioned, although less common, can also be referred to as a piano trio variant.

The piano trio is known for its intimate and collaborative nature, allowing each instrument to shine individually while creating a cohesive and balanced ensemble sound. The violin takes on the melodic role, supplying the high-pitched and expressive lines. The cello, with its rich and resonant tone, provides the basslines and adds depth to the group's sound. The piano acts as both a harmonic foundation and a versatile instrument capable of taking on solo passages and interacting with the other instruments.

The piano trio repertoire encompasses a wide range of styles and periods, with compositions from famous composers such as Beethoven, Mozart, Schubert, Mendelssohn, Brahms, and many more. These works often showcase the intricate interplay between the three instruments, highlighting their ability to communicate and respond to each other in real-time.

Whether performing classical masterpieces or exploring more contemporary compositions, piano trios offer a captivating and dynamic listening experience. Their harmonious blend, technical virtuosity, and genuine musical dialogue make them a beloved and enduring chamber ensemble.