The skies are blue and the corn is as “high as an elephant’s eye. Beat the heat at the Pull-Tight Theater with Pull-Tight Players production of the classic Broadway musical, “Oklahoma!,” July 15–18 and 22–25. The first musical collaboration of composer Richard Rogers and lyricist Oscar Hammerstein, “Oklahoma!” is set in the Oklahoma Indian Territory just outside the town Claremore just before the territory becomes a state in 1906.