If you want to change key up on the fly while practicing or playing live, then the CAPO Pitch Up Pedal makes it as easy as tapping your foot.
The Morpheus Capo is a discontinued polyphonic pitch-shifting pedal that electronically simulates a capo, allowing you to raise your guitar's pitch in half-step increments (up to 7 semitones or a full octave) without physically moving a capo, handling full chords without warbling, and even offering a 12-string emulator. It functions like a virtual capo, letting you change keys instantly, and it's known for its clean, chord-friendly polyphonic tracking, offering a versatile way to access higher registers and sounds.