ANTHRAX singer Joey Belladonna joined SLAYER members Tom Araya (bass, vocals), Gary Holt (guitar) and Paul Bostaph (drums) on stage during soundcheck before tonight's concert at Métropolis in Montreal, Quebec, Canada to run through an impromptu cover of the Bryan Adams classic 'Summer Of '69'.

Video footage of the performance can be seen below (courtesy of ANTHRAX guitarist Jonathan Donais) - check here.

 

SLAYER's seven-week North American tour with ANTHRAX and DEATH ANGEL kicked off on September 9 in Cleveland.