Aerosmith guitarist Joe Perry upset at frontman Steven Tyler

Aerosmith's guitarist Joe Perry has spoken of his irritation that the band have been forced to cancel their US and Canadian tour after frontman Steven Tyler fell offstage in August.

Perry said he was "upset" that the band had cancelled the tour, and explained that he has hardly spoken to the frontman since his accident.

"I haven't talked to him in over five weeks," he told the Associated Press. "I don't know what's going on with him. I hear he's getting better, but I don't know I really don't know what's going on with him."

Tyler's fall left him with injuries to his back and left shoulder.

Perry went on to state that he thinks Tyler needs to "get his act together" as the duo haven't written a song together in the last decade.

"All I know is he's got to get his act together. I mean, he and I haven't written a song together alone in the same room in over ten years, so there's been some changes in paradigm of what Aerosmith is," he said.

Last month, Tyler denied that there were any troubles in the band, telling Rolling Stone, "Shit's good".