Candice (the woman with the auto-harp who joins Eli's wedding band) is played by Valerie-Jean Hume. In real life, she is considered one of the modern masters of the auto-harp and is the creator of the Hume Harp, a celebrated professional instrument.
This one was supposed to be the next episode to air instead they flipped "The wedding" and "Making rent" around. Which is why the opening monologue shows the wedding in it.