By Erik Engman Author, Clown and Improvisation Teacher, Theatre Critic EatMoreArtVegas.com IG: ErikReviewsVegas It is the 250th birthday of the United States of America, and what better way to celebrate than with a good ol’ American musical! And just in time, Super Summer Theatre and Hynes-Sight Entertainment bring 1776, with music and lyrics by Sherman Edwards and book by Peter Stone. So bring your picnic basket, a blanket, some hot dogs, and little American flags to wave as