Viola
The alto violin, generally called the tenor. The viola is slightly larger than the violin, and has four strings tuned as follows:- ΠO Music for it is written with the C clef on the third line.
Viola da braccia (arm viola), Viola da gamba (leg viola), Viola da spalla (shoulder viola), Viola pomposa. Obsolete varieties of the viola family. The last was the invention of Sebastian Bach.