Not that you need someone to tell you to go see a Prince concert, but you really oughta go see a Prince concert if you get a chance — and now you have another one. His bizarrely staggered but absolutely stupendous run of shows here, split between Madison Square Garden and the Izod Center in Jersey, just spawned another date: February 7 at MSG. It’s not up on Ticketmaster yet, but tix will go on sale this Saturday, January 15, at 10 a.m. His other remaining date there, Tuesday January 18, is sold out, so jump on this one early. And seriously: “The Beautiful Ones” is superb. Plus there’s always a chance that he’ll walk through your section, for some reason.