There is a great little Irish pub in downtown Orlando away from the main street called Harp & Celt. It’s actually two separate pubs connected together. In addition to a great atmosphere and occasional authentic music, the food is very good as well, including some classics, Americans dishes, and currys.
A local group of musicians called Crooked Road stop in to play every other Wednesday (at the moment). They are fantastic! They can usually be found at the Claddagh Cottage off Curry Ford Rd, but since it is being moved in 2017, they are sometimes at the Harp & Celt.