String instruments are musical instruments that produce sound from vibrating strings when a performer plays or plucks them in some way.
Violin is probably the most popular string instrument. It's the highest in tone, with G, D, A, and high E strings.
Viola is not as popular of a string instrument as the violin.
They are slightly bigger and lower than the violin but higher than the cello and has the C, G, D, A strings.
Violas also rarely get the solo parts and usually play the background.
Cellos are the second lowest string instrument and are probably the second most popular.
They have the same strings as the viola (C, G, D, and A).
Double bass is the lowest string instrument and has the E, A, D, and G strings.
They are also used mainly for background music.
