What is what key is violin in?

The violin is typically tuned in the key of G, with the strings tuned to G, D, A, and E. However, depending on the musical piece being played, the violin may be tuned to a different key. The key of a piece of music is determined by the notes and chords that are used in the composition. The violin is a versatile instrument that can play in a variety of keys and can easily be transposed to fit different musical arrangements.