From Johnny D's website: Rock Bottom came about when a bunch of well known Boston rockers (from bands the Upper Crust, the Baggs, Ross Phasor, and other bands) started playing their favorite ‘70’s covers, strictly for kicks. Fortunately, they didn't know when to quit and you'll never hear better renditions of guilty pleasure classics by Kansas, Billy Squire, Styx, and Led Zeppelin. Apparently there is a warm-up band starting at 10:00pm. I'll try to be by the coat rack/water closets at the end of the bar at 9:30 pm ish. I'll have a meet-up sign.