Places like this deserve international protection agreements. Established in or around 40 years ago, The Rex is a live music gem that harks back to those years before the ability to carry every song from every artist from every album ever in your pocket existed. This is a spot to share some great tunes.
Stuck downtown or just wandering around, killing time? Monday to Friday, music starts at 6:30 or so and over the weekend the sets kick off at noon. I can't speak to the food quality yet, but it appears to be standard pub fare and people seemed to enjoy eating it. The atmosphere is familiar and friendly.
I can speak to the quality of music you will hear. Excellent. I've been consistently impressed by the calibre of music performed here. It's a great showcase of the talented musicians living in Toronto. Spots in the back will diminish the sound oh so slightly, but if you came for quiet conversation, move along. Otherwise, grab a seat, have a drink and listen away.