Nine petit sonatas & Chaconne Op.66 were originally written for two cellos or two bassoons or two violes. These short pieces are all simple and technically easy, but beautiful and lovely.
- Nine petit Sonatas No.1, Op.66-1 (Duet)
- Nine petit Sonatas No.2, Op.66-2 (Duet)
- Nine petit Sonatas No.3, Op.66-3 (Duet)
- Nine petit Sonatas No.4, Op.66-4 (Duet)
- Nine petit Sonatas No.5, Op.66-5 (Duet)
- Nine petit Sonatas No.6, Op.66-6 (Duet)
- Nine petit Sonatas No.7, Op.66-7 (Duet)
- Nine petit Sonatas No.8, Op.66-8 (Duet)
- Nine petit Sonatas No.9, Op.66-9 (Duet)
- Chaconne, Op.66 (Duet)