RE: TEACHING--I have discovered that with most people, the best place to start is by ROTE, ie, listen to this, then play it (The Echo), after a few times of this, introduce Simple Visuals--"D D DDD", (which would play as long note, long note, three short notes) while the student LOOKS at the paper, not the fingers. Then when this is going good and student knows the sound and names of several notes/chords, put them on a staff and say, this is what you have been playing looks like in music notation. Go as slowly as your student needs you to and work in REAL songs that Student Wants to learn. My students have all been playing appealing tunes by the end of the first lesson. Says something about either my students, or me, or my method, don't know which!