R1:cd9d59344cca

Fix a rap bug, and add a beat

Summary:
The flow was off in some cases. This should mitigate it.

Adds a Unicode musical note character at the start of the rap which,
when clicked, embeds a song in the background, hides it and plays it.
Currently the song is Gangsta's Paradise (karaoke version) but if you'd
prefer a different song, I can probably change it with only a few weeks
of work.

This doesn't respect the "embed youtubes" preference because you have to
click something to embed it, so it's your own…