H. D. Koppel: 第二號弦樂四重奏，Op. 34
I. Allegro fresco, con espressione
The Koppel Quartet
II. Molto andante
The Koppel Quartet
III. Con vivezza
The Koppel Quartet
Herman D. Koppel: Composer & Pianist, Vol. 3
群星
H. D. Koppel: String quartet No. 3，Op. 38
I. Allegro
The Koppel Quartet
II. Andante
The Koppel Quartet
III. Vivace
The Koppel Quartet
H. D. Koppel: Ternio, Op. 53b
H. D. Koppel: Suite for solo cello，Op. 86