The horns play his sad th
The horns play his sad theme, and he is the principal attraction at a carnival in a public square in Saint Petersburg.  He is in love with a ballerina who hates him and loves a handsomely attired Moor.  When he interrupts the Moors flirting, the Moor kills him, and the crowd erupts in anger, quieted only when a policeman reminds everyone that the victim is, after all, only a puppet.  For ten points, identify this title character, first danced by Waslaw Nijinsky, in a 1911 ballet by Igor Stravinsky.
The horns play his sad theme, and he is the principal attraction at a carnival in a public square in Saint Petersburg.  
Petrouchka