Which intervals do you want to try? (Drag to quickly (de)select multiple)
Generate interval start and end; answer from middle C
Pick first note and get an interval from there
Meander (pick first note and do intervals from each answered note)
Just show the interval between two held keys, for self study
Play interval (P)
Result:
Initializing WebMIDI
Play the interval from:
Waiting for first note of interval
Currently played interval: