Path
What to study before Authentic and plagal modes
The same final reached from a different range, which is the only thing that separates the two forms. Below, the concepts that come before, in the order in which one explains the next. Signed in, you see the same path minus what you already hold: your path.
Properties of sound
The four properties every musical sound has at once: duration, intensity, pitch and timbre.
Note
The seven pitch names, and the sign that puts one of them on the page.
Tone and semitone
The smallest distance Western music uses, and the whole tone built from two of them.
Interval
The distance between two sounds, counted by note names, melodic or harmonic, simple or compound.
Interval quality
Perfect, major, minor, augmented and diminished: what separates two intervals that share a number.
Major scale
Seven degrees built on a fixed sequence of tones and semitones, and the reference everything else is measured against.
Mode
How the tones and semitones are distributed among the degrees, which is what makes one scale differ from another.
Church modes
Dorian to Locrian: the modes of medieval liturgy, which survived in folk music after art music left them.
Range
The notes a voice, an instrument or a melody actually covers, from the lowest to the highest.
Authentic and plagal modes
The same final reached from a different range, which is the only thing that separates the two forms.