A violist is a musician who plays the viola, a string instrument that is slightly larger than a violin and has a deeper, richer sound. The viola is typically played with a bow, and it is known for its unique role in orchestras and chamber music, often providing harmony and depth to the overall sound. Violists are essential members of orchestras, where they contribute to the string section alongside violins, cellos, and double basses. They may also perform in smaller ensembles or as soloists. The viola has a range that allows it to play both melodic and harmonic parts, making it a versatile instrument in various musical genres.