Madball (photo via the band's Myspace page)Beyond the unending, dentist-office-like whir of hundred of tattoo needles buzzing on and off, the Miami Tattoo Expo will feature another soundtrack -- an impressive lineup of local and national musical acts. While other South Florida tattoo conventions have relied mostly on rockabilly cover bands and the like, the Miami expo has garnered a reputation for putting on full-on shows on its various stages.Because tattoo collectors comprise an ever-broader
