Rockers Tool postponed their Tuesday night (30Apr13) concert in Adelaide, Australia at the last minute after doctors advised singer Maynard James Keenan not to perform.

Promoters announced the news just hours before the band was due to take to the stage at the city's AEC Arena. The gig will now take place on Wednesday (01May13).

A statement from Frontier Touring reads, "Maynard James Keenan has been advised by doctors against performing this evening. Tonight's concert will be rescheduled to tomorrow night - Wednesday 1 May."

Keenan appears to be suffering voice problems - a post on the band's page states, "Effing throat won't go. Adelaide show is postponed until... May 1st. Sorry."