a string instrument
Woodwind.
Generally they are percussion instruments. Assuming you mean like a snare, bass, etc.
Stringed instruments such as cellos, violins, and violas.
the cello
largest
Compass
vadyopakaranam
The clarinet
A collective noun for violas is a "group" or "cluster" of violas. While there isn't a widely recognized specific term unique to violas, these general terms can effectively describe a collection of them. In a more poetic sense, one might also refer to them as a "bloom" of violas, emphasizing their floral beauty.
No, the frost will not harm violas. They will not bloom in the winter but they will survive the frost.
A harp a harmonica
Keyboard