guitar, violin and piano
To narrow it down to three groups, it would be strings, winds, and percussion.
Strings
four
How do you do a boondoggle with three strings
A viola does not have three strings in fact it has four
The Saz is a Turkish instrument. It has seven strings and resembles a longer-necked lute. The seven strings are part of three different groups, and can be tuned differently to achieve different sounds.
octavina have 12 strings in 6 groups divide it into 3
Three Strings to Her Bow was created on 1911-04-10.
There are four (4) groups of instruments: Strings, Woodwinds, Brass and Percussion.
Woodwind, brass, strings, percussion.
woodwinds, percussion, and brass
strings and nonstring instruments