Disc 6 – Wrists and Ribcage. “Butterfly-Lesson”. This is the first lesson of day 2 of the workshop) January 21, 2018 by Pieter Hartsook https://jerrykarzen.com/wp-content/uploads/woocommerce_uploads/In-Tune-with-Yourself-Disc-6.mp3 “Disc 6 – Wrists and Ribcage. “Butterfly-Lesson”. This is the first lesson of day 2 of the workshop)” from In Tune with Youself: Feldenkrais for Muscians 2010 by Jerry Karzen. Released: 2010. Track 6. Genre: Vocal.