 Beginning in June , The Black Crowes toured Europe for six weeks , opening for Aerosmith in concert halls and at festivals . " Go Faster " and " Kickin ' My Heart Around " remained staples of the band 's 60- to 75 @-@ minute sets . Harsch required emergency surgery for a twisted intestine on June 24 and missed the band 's next eight shows . ( The crew continued to set up Harsch 's keyboards and placed a human @-@ sized inflatable green alien in his spot . ) One of the shows Harsch missed was a charity concert in London at which The Black Crowes played a 45 @-@ minute set of Led Zeppelin songs and blues covers with Jimmy Page . The band 's last show in support of By Your Side was a one @-@ off festival date in Niigata , Japan , on July 30 . 
