The gig takes place in Chicago on May 14 for Teen Cancer America
'If people want to add shows... then it will go for a while longer, but not that much longer,' Daltrey states
Plus Wilko Johnson plays Dr Feelgood classics at London's Royal Albert Hall
The rock frontman also slammed the current state of the record industry
Band have rescheduled O2 Arena gigs on doctor's orders
The Who singer makes a surprise appearance at a wedding in Scotland
Live performance is scheduled for London's Royal Albert Hall in July 2015
Paul Weller, Kaiser Chiefs and Johnny Marr will support on June 26 date
He appeared with The Who Band in London alongside Eddie Vedder, Ricky Wilson and Wilko Johnson
Frontman will appear at Shepherds Bush Empire in November in first live appearance since Beady Eye split