note (name, acc, octave) spoiler

it sounds like you're playing:

frequency (Hz):


is note gueesed: No

N.B. on +1 octave than the true pitch
The guitar is a transposing instrument; that is, music for guitars is notated one octave higher than the true pitch. This is to reduce the need for ledger lines in music written for the instrument, and thus simplify the reading of notes when playing the guitar.

inspiration and code parts from: