Bob Wilcox and Gerry Kowarsky review (1) THE ELIXIR OF LOVE, by Gaetano Donizetti & Felice Romani, at Opera Theatre of St. Louis, (2) THE PAWN, at Circus Flora, (3) THEY’RE PLAYING OUR SONG, by Marvin Hamlisch, Carole Baker Sager, & Neil Simon, at Stages St. Louis, (4) OLIVER!, by Lionel Bart, at Insight Theatre Co., (5) HANDS ON A HARDBODY, by Trey Anastasio, Amanda Green, & Doug Wright, at New Line Theatre, and (6) THE RIVER, Elizabeth Heffron, and THIS IS NOWHERE, by Caitlin McCommis, at Tesseract Theatre Co.