Just a little trick I learned this weekend. When I first started singing lyrics in-game, I used Poetical, and just the lyrics.
Then, because of confusion in the chat panel, switched to puting a '~' before each stanza.
But at Winterstock, I noticed several bands had a nifty musical note show up before each line in their chat bubble. So I had to ask...
While you are in poetical, while editing the lyrics, before each line, use your keyboard and 12-key pad to enter "Alt + 13" to get a single note, "Alt + 14" for a double note. In Poetical, it will show up as a "?".
It will also show up as a "?" in the chat box, but will place a note symbol in the chat bubble.
You can also do this in the "Say" channel. Just type "Alt + 14" and space, then whatever you wish to sing, and the note symbol will show up in your chat bubble. Again, it will only show a "?" in the actual chat box, so people who aren't seeing the bubbles will just see the "?".
Just thought I'd pass this info on to all who might not know it.