Scale trainer

Spelling follows the key: each degree takes the next letter from the tonic, so G major runs G A B C D E F sharp, never G flat. Pentatonic and blues shapes reuse their parent scale's letters, and whole tone and diminished take the smallest accidental that keeps every letter distinct. Reference pitch is fixed at A 440, the guitar is drawn in standard tuning, and chromatic names outside the scale read as sharps. Practice progress lives in this tab and disappears when you leave; the microphone is analyzed a few times a second and is never recorded or uploaded. The tool does not transcribe melodies, teach songs, or follow alternate tunings.