Question

for which instruments did mozart write eine kleine nachtmusik? instrument played in eine kleine nachtmusik string quartet double bass harp piano not an instrument played in eine kleine nachtmusik

Explanation:

Mozart's "Eine kleine Nachtmusik" (A Little Night Music), Serenade No. 13 in G major, K. 525, is scored for a string quartet (two violins, viola, cello) and double - bass. It does not include harp or piano.

Answer:

Instrument played in Eine kleine Nachtmusik: string quartet, double bass
Not an instrument played in Eine kleine Nachtmusik: harp, piano