The Mad Lads were yet another Memphis vocal group with South Memphis ties, and they recorded a number of singles and a handful of albums for Stax Records before lead singer John Gary Williams (who was a member of the Memphis Black Power group known as The Invaders) was arrested and charged with being involved in a sniping incident against the Memphis police in late 1968. Later, Williams launched a solo career, and recorded one very elusive self-titled album just as Stax was falling apart in late 1974. Over the years, Williams has put together a number of reconstituted Mad Lads groups, and is now the subject of a forthcoming documentary called I See Hope: The John Gary Williams Story , which is currently in production. The annual appearance of the Mad Lads at the Stax to the Max festival is a big deal to the largely South Memphis crowd that attends.