Robert L. Koff An Introduction to Music of The Twentieth Century - Webern, Billy Jim Layton & Bartok

Juilliard String Quartet - Haydn String Quartet Op. 74 No. 1 - ll Andantino grazioso

Juilliard String Quartet - Haydn String Quartet Op. 74 No. 1 - l Allegro moderato

2021 Robert Koff Award presented to Rucker C. Johnson

lll Scherzo - Bartók String Quartet No. 5 - Juilliard String Quartet (1950)

String Quartet No. 4 (1950) : II. Allegro con fuoco (Remastered)

Odin stone aka Robert koff