Currently Chairman of the Performing Arts Department at Greens Farms Academy in Westport, Connecticut, he has served as Assistant Director of Jazz Studies at the University of Texas in Arlington, Associate Director of Jazz Studies at the University of Northern Colorado, has taught at the Royal Academy of Music in London, England, at Marlborough College in Marlborough England, at Southern Connecticut State University and at the Neighborhood Music School in New Haven, where he continues to teach jazz piano and lead the NMS Big Band and Vocal Jazz Ensemble. He received his Doctor of Arts Degree in Composition and Music Theory from the University of Northern Colorado in Greeley, and his Bachelor of Music Education and Master of Music in Composition degrees from the University of Nebraska in Lincoln.
Dr. Cadwallader has played with such jazz luminaries as Rufus Reid, Bob Mintzer, Eddie Daniels, Ed Shaunessey, Bill Watrous, Don Menza, Clark Terry, Ali Ryerson, Joe Beck, Giacomo Gates, and many others. Rex appears as performer or composer on over twenty-five albums including his most recent cds,"Quicker Than The Eye," with bassist Mike Asetta and drummer Artie Dixson, "Broadway - West Side Story," with flutist Ali Ryerson, bassist Mike Asetta and drummer Artie Dixson, and "The Art Of Trio," with bassist David Chevan. The cd, "Repartee," also with David Chevan was released in January 2000. His new solo piano cd "Love Song For Nancy" featuring jazz standards will be released this fall on the Stanza USA label, and a cd of original contemporary jazz with drummer Rich MacDonald entitled "The Cadwallader / MacDonald Project - YOUR SMILE" was released in 1998 on Jaybird Records. Two other recordings, "Christmas In The Neighborhood" with bassist Mike Asetta, and "In A Mellow Tone," a tribute to the music of Duke Ellington with bassist David Chevan and drummer Jesse Hameen II, were released in 2002 and 2003 respectively.