The switch after 100 is where it starts getting challenging. I get up to 100 on most tries, but I usually fail shortly after that. I think my best is in the 200s. Maybe in the early 300s.

The trick is to find the right pace and stick with it. Muting the music helps for me. Only use the exclamation mark as a guide to help adjust your pace when necessary, aside from that just focus on keeping pace.