The best local hip-hop producers will converge on Pauly’s Hotel Friday for a showcase featuring PJ Katz, Big Malk, Josh Mirk, Raw Threat and Jack of All Trades (10 PM, free, 426-0828). . . . Former Metroland writer Bill Ketzer’s ska-punk band Can’t Say will reunite for one more show at Valentine’s on Friday, after 15 years away (8 PM, 432-6572). . . . Singer-songwriter Milton joins forces with the Double-D’s Friday at Club Helsinki (9 PM, $12, 828-4800). . . . Ghosts of Hardcore Past happens again at Valentine’s Saturday night with special cover sets by Girls of Porn, Bourbon Scum and Point Blank (8 PM, 432-6572). . . . New York fusion quartet the Darren Lyons Group will come to Red Square on Saturday (8 PM, 465-0444). . . . Kung Fu (above) will help keep the party going after moe. at the Hollow Bar + Kitchen on Monday night (426-8550). . . . MIRK will do the same at the Hollow for New Year’s Eve Tuesday night (426-8550). . . . Twiddle will help Saratoga ring in New Years at Putnam Den on Tuesday (9:30 PM, $15, 584-8066).