A Pianist's Guide to Free Improvisation: Keys to Unlocking Your Creativity. Taught by Marilyn Crispell. Sit down at the piano & play whatever comes into your head, making up your own music as you go along. That's free improvisation. This lesson is designed for players with some facility at the piano but with little knowledge of improvisational techniques. After reviewing essential music theory, Marilyn shows you how scales, triads, intervals, pedal points & tritones can all be tools