Euclid Records, the vinyl and CD store that opened in the Bywater this fall, is set to begin hosting all-music trivia nights at the Hi-Ho every Tuesday, beginning December 28. The trivia contests, the only one of their kind in New Orleans, are free to enter, and offer prizes such as records, gift certificates and bar tabs for the contestant with the most obscure, esoteric musical knowledge. Each contest will begin at 8:30 p.m., and will be followed by DJs spinning sets to mellow everyone out after the intense, grueling and exhaustingly competitive nature of music trivia. Start studying.