Ability to scroll back and forth while playing a song

[kaelyavel]

No description provided.

[bryanbraun]

Yeah, so an early version of the site actually supported this feature, but I ended up moving away from it. At the time, I was using IntersectionObserver instead of WebAudio to play notes, but it ended up making the tempo less consistent, especially in Safari browsers. I have some notes in the code about it here.

But I think there's a couple options, while still keeping the consistency of Web Audio:

1. Lock scrolling during play (what we currently do)
2. If a song is playing and the user scrolls, immediately pause the song (kind of like we do when somebody changes the tempo mid-song).
3. If a song is playing and the user scrolls, immediately pause the song, until the scrolling has stopped, after which we automatically start playing again from the new position.

I think we'd have to experiment with option 2 or 3 to see if it feels like a more natural experience than the current approach.