The workshop computer hears the file. GuestMic serves the pack.
Spark hears the file — instruments, how they are played, whether a tab will hold. GuestMic serves the pack. Some songs will not yield a tab — dense mixes, live bootlegs, noise. Spark stamps works, partial, or ear only so newcomers are not handed a fake chart.
This preview cannot hear YouTube audio. A decode on a song uses what is known, then caches the verdict for everyone. When the Spark is running, paste the pack it mints here — that pack replaces the guess.
publish a pack
on the server
No packs yet. Decode a song from play-along, or publish one here.