Question 7 of 10 Three of the following instruments are very common to bluegrass, folk, and
country music. One is less common and was introduced to these styles later.
Which is the following is least common?
OA. Steel guitar
O B. Fiddle
OC. Mandolin
O D. Banjo

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explanation:

this is a experment where you actully have to do the work like go take some photos in something your interstid in

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)