MUSIC HELPPP!!!!!!!!!!!!!!!!!!!!!!

A blank is a mechanical or electronic device used to keep a steady tempo

a- metronome
b- crescendo
c- ritardando
d- bar line

asked by HELP!!!!!!!!!!!!!
  1. I think the answer is A) Metronome.

    posted by Elsa tony
  2. Yes, A.

    posted by Writeacher
  3. Definitely A. The Metronome.

    posted by Mr. W Smith

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