Octave
Music theory wp
Schisma
The Well-Tempered Clavier
Interval ratio
Acorde
Note
Perfect fourth
Harmonic
Pythagorean comma
Key (music)
Interval (music)
Afinación del piano
Music theory
List of pitch intervals
Clef
Perfect fifth
Piano key frequencies
Quarter tone
Chromatic scale
Semitone
Tonality
Syntonic comma
Harmony
Afinación
Cent (music)
Beat (acoustics)
Circle of fifths
Key signature names and translations
Ditone
Afinación pitagórica