It is no secret that I am a fan of musicals, I've been in over 30 of them and have directed about 15 or so, in fact, I've even written a couple of them, so I'm partial. Fringe is always interesting for musicals because the format is generally shorter so you get the opportunity to see some shows that might not be done in the regular season. You also will get song cycles, and more edgier pieces, and those are certainly up on the docket for this Fringe.
Here are a few that have caught my eye:
If you are looking for something for a younger audience, you could check out EMT's Broadway Rocks or Opera NUOVA's You're a Good Man, Charlie Brown. Both shows are in the PCL and should provide an excellent introduction to musical theatre for even the youngest audience members.
Make sure you check out the program as there are even more musical options for you, from Opera to Sondheim to Zombies! I'm sure if you like musicals there will be one that feels just for you!