Okay.
There are 2 permanent stages in Tomorrowland. One is the Cosmic Ray's Stage. Sonny is actually on the roof of that stage. The entire thing actually rises up to reveal a stage. It was most recently used for Magic Music Days, small groups of HS Students used this stage, usually for singing.
The Galaxy Palace Theater is a full outdoor stage located between Walt Disney's Carousel of Progress and the Buzz Lightyear Giftshop. It has been used for Magic Music Days, and Mickey's twas the Night Before Christmas most recently.
Now, a thrid stage, called the Tomorrowland Stage, was removed last year. It was a pretty permanent structure, located in front of the old Skyway Station. It is gone now. Temporary stages are now erected in that location on an as-needed basis. That is what is in place now. It is used for Magic Music Days and special events like Grad Night, Night of Joy, etc. Since it's only a temporary setup, it can face any direction.
Also, some really odd fact, after the Tomorrowland Stage was removed, Walt Disney's Carousel of Progress Attendance increased dramatically, and shortly after the stage was removed, Carousel of Progress was moved out of the reduced hours status, and now runs with the park hours.
Hope that clears it up for ya.