There are reunion gigs and there are reunion gigs. It's certainly no secret anymore that Milwaukee's great Semi-Twang has reunited for some gigs and even a new record in recent years. But when the band - featuring some of the city's top musical talent, including John and Mike Sieger, Bob Jennings, Bob Schneider and guitarists Mike Hoffmann and Jason Klagstad - takes the stage at Turner Hall on Wednesday, Feb. 29, it mark a reunion of another kind.