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Happppy song

Extreme: 10*
Hard: 8*
Note: For best experience, set the subtitles to be red and in the top center.
Also there are a couple moments with a strobe effect on the subtitles. Not sure if it's enough for an epilepsy warning since subtitles are rather small, but those who are extra sensitive to flashing lights may want to turn off the subtitles as well as the video.

I spent more time putting fancy effects on the subtitles than making the actual chart... well, I think both the subtitles and the chart itself came out good, so it's fine.