Band cancelled gig on August 13 but drummer now says he is "feeling better than ever"
Performance in Concord, California was cancelled due to "ilness"
The Hollywood star played guitar on a rendition of 'Train Kept A-Rollin''
Final day of metal festival also brings performances from Against Me, Alter Bridge and Black Stone Cherry
Artists team up for series of live dates in the US and Canada this summer
Calling Festival will take place on June 28 ad 29, 2014
US band will close three day festival in June of next year
Singer says band began jamming as they waited for drugs to arrive
Aerosmith were due to headline festival in July
Elton John also receives special award and Smokey Robinson debuts new song at the New York ceremony
The 65-year-old frontman admits to blowing $6million on cocaine
Steven Tyler also reveals he refers to vaginas as "the holy grail"
'Music From Another Dimension!' is set for release in November
Singer leaves to focus on his band's forthcoming new album and world tour
Band's 15th studio album is due out in late August
Guitarist says veteran rockers' new material will be 'modern and hi-fi'
But axeman promises fans their 15th studio album will be significantly better than 'Honkin' On Bobo'
The rockers' 15th studio album will be released during their Global Warming tour
The track is an outtake from their 1993 album 'Get A Grip'
But Tyler says his hard work is reason for band's success