I created a race track matching "Ride of the Valkyries" by Richard Wagner using TrackMania's level editor.
When I learned TrackMania had a deterministic physics engine I instantly wanted to try this. Turns out 3-D music synchronization is more complicated than 2-D projects I've done in the past with Line Rider.
Although there are checkpoints in TrackMania, there is no way to save the velocity, angles, and position of the vehicle midway through the track that I know of. Therefore, I had to restart from the beginning every time I wanted to adjust or move a block. I think I hold the record for most times listening to this piece in a month.