The Viola

The viola is similar to the violin but slightly larger. Its lower, more mellow tone creates some beautiful calming and soothing music.
The viola looks so much like a violin that many people think it is--violists, of course, are quick and proud to correct them.
It's played in the same manner as a violin.

The viola's sound blends well and makes it an excellent accompaniment instrument in string choirs and orchestras, but its beautiful mellow tone is often used in solos as well.
Viola isn't a difficult instrument to play. Like all the instruments, the more you practice the better you play.
Here's an example of viola music.
Olga Goija playing Handel's Sonata VI for Violin and Piano
(Adagio)