The Ionian Mode

The Ionian mode is a musical mode or, in modern usage, a diatonic scale also called the Major Scale. The C Major scale is usually the first scale that students learn on the Piano.

The Lydian Mode

The modern Lydian mode is a seven-tone musical scale formed from a rising pattern of pitches comprising three whole tones, a semitone, two more whole tones, and a final semitone. The Lydian scale can be described as a major scale with the fourth scale degree raised a semitone, making it an augmented fourth above the tonic, e.g., an F-major scale with a B♮ rather than B♭. Many Polish folk songs are in the Lydian Mode.