What is the regular fluctuation of a tone between high and low pitch while playing an instrument called?
vibrato
articulation
tuning
pulse

the regular fluctuation of a tone between high and low pitch while playing an instrument is called vibrato.

Explanation:

Hi, the regular fluctuation of a tone between high and low pitch while playing an instrument is called vibrato.  

Vibrato is a musical effect, most commonly used by guitarists in many genres of music. It consists of a regular fluctuation of the tone of a musical note between high and low pitch (different frequencies).

This fluctuation adds expression to the notes played on an instrument.  

Feel free to ask more if It's necessary.

1. red- the color of blood

2. black- the color of the darkness in my soul

3. white- the color of the clouds

4. orange- a fruit

5. blue- the color of water

is it ''blue notes? ''

hope i ! you didn't give any options so i hope that was correct! < 3