6 of the most famous piano Nocturnes that also work for guitar/flute duet. could also be played on violin. Op 9 no.1 (with opt. flute 2) (Bb minor) & 2 (Eb) , Op 15 no. 2 (F# ), Op 37 no. 1 (G minor), Op 55 no. 1 (F minor), and finally for 2 flutes & guitar Op 72 no.1 (E minor)
Product Information selected Chopin Nocturnes arr. for flute & guitar by Nicholas Stokes - Digital Sheet Music