This software demo showcases an ongoing project developing an open-source application for analyzing recorded music performances. After loading an MEI score and an audio performance recording, the software can temporally align these two media and generate annotations automatically. The software can also align multiple performances to each other, beyond their shared score, making it easy to compare their interpretive nuances. Attendees may try the software on a provided laptop, or install it easily on their own computers. I anticipate this interactive experience will stimulate conversations about UI design, diverse use-case scenarios, and future functionality suggestions.