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.
 
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