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