👉 A concertinist is a musician who plays the violin, which is often considered to be one of the most important and versatile instruments in classical music. They are known for their ability to play a wide range of repertoire, from Bach's Brandenburg Concertos to Brahms' "Symphonies No. 1-4" and beyond. Many concertinists also specialize in works by composers such as Beethoven, Mozart, and Haydn.