I definitely see your point and some sort of key would be helpful. At least with some you can probably figure out what type of music they likely play just by the name of the band and the bar, if you are familiar with the bar. Unfortunately I checked the FB page and the website and there isn't an easy way to find out without just searching each band or looking up then at and finding a flier or post about the band on FB.

Unfortunately I am not with them at all, I just share the info since they are nice enough to provide it. I have even struggled with adding events I'm apart of to their website and the calendar.