The Orange Piano

As Emily makes her usual way to class, which is usually sprinting due to her always being late, she notices something out of the ordinary. A bright orange piano sat on the sidewalk of campus. It had a boxed top and claw-foot legs that curved at the top like swirly cloud in the summer wind. Curiously, she slowly came to a halt and sat at the odd piano to play instead of making it on time to class. What happens after that? Emily could have never guessed.