Euterpe ("rejoicing well" or "delight"), in Greek mythology, was the daughter of Zeus and Mnemosyne. Called the "Giver of Pleasure", she was the muse of music. In late Classical times she was named muse of lyric poetry and depicted holding a flute. She invented the double-flute. The river Strymon[?] impregnated her; her son Rhesus was killed by Diomedes at Troy.