Jeffery has recorded and performed as a session musician with many acclaimed artists-James Taylor, Gladys Knight, Dionne Warwick, Paul Simon, Michael Franks, Herbie Mann, Steely Dan, Michael Bolton, Michael Jackson, David Sanborn, Natalie Cole, Mary J. Blidge, Bonnie Raitt, Diana Ross, Luther Vandross, Dave Grusing, to name a few. He has led seminars Transformational Seminars as well as co-authored The Illumination Workshop… presently and actively teaching A Course In Miracles and continuing to seek Creative Opportunities to expand and accelerate Revolutionary Evolution tradition of personal and interactive sacrifice and suffering.