Real Salt Lake is looking for a few dozen good singers.From an observer's standpoint, here's hoping the vocalists sing quickly and without vocal gymnastics.Anyway, RSL is holding its third annual tryout for national anthem singers, set to take place Feb. 10 between 3 and 6 p.m. Feb. 11 between 10:00 a.m. and 1 p.m. in the Rio Tinto Stadium's Budweiser Club Real restaurant on the second floor. Tryouts are open to all area singers and musicians. RSL seeks to fill spots for all 17 of its MLS regular season contests plus potential Lamar Hunt U.S. Open Cup.martyr@sltrib.comTwitter:@Rsltribune