Aerosmith bassist Tom Hamilton sat out the band's performance at the Monsters of Rock Festival in Brazil earlier this month. So far, there is no official word on the reason for his absence, but it has been rumored he had fallen ill shortly before the show.
Hamilton has battled cancer in recent years and even undergone some experimental surgeries to try and cure the condition.
Former Joe Perry Project member, David Hull, who has stepped in for Hamilton in the past, took the bass player's spot during the gig.
It's not the first time in recent memory Hamilton has been forced from the band's lineup, recently doing so on the band's 2013 Australian trek.
The Monsters Of Rock show came as part of the band's ongoing tour of South America.
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