One of the nine Muses, Euterpe is the Muse of lyric poetry.
While it is said that Euterpe carried a flute, I can't imagine how she could sing or recite lyrics with a wind instrument at her mouth. Bards have always accompanied themselves with string instruments, so just for this incarnation, Euterpe plays the harp.
The harp she has here is not "period" classical Greece. Muses have always and everywhere existed for artists, and are not bound to one historical guise.
A metope (but in paper) that might have decorated the exterior of Aphrodite's temple.
Each image is an edition of 5, then, sadly, the plates wear out.