the modes, built from the guitar pentatonic boxes you already know — see it, flip it, hear it
Every mode is a pentatonic scale you already know, plus two notes. Pick a key — the selector sets the major tonal center — and the five pentatonic boxes appear in order down the neck, each showing the two mode tones that turn that box into the full mode. Flip a mode pair to its relative minor and watch the same physical notes change color and meaning; switch the mode tones out to strip back to the bare pentatonic; press play on any box to hear what you see.
major key
click the selected mode pair again to flip major ↔ relative minor · mode tones toggles the two added notes in and out — out leaves the bare pentatonic, and the play buttons follow · hover a note to light up its degree family · click a note to hear it