Dark Horse was realeased after the Beetles became what?
Dark Horse (George Harrison album): Dark Horse is the fifth studio album by English musician George Harrison, released on Apple Records in December 1974 as the follow-up to "Living in the Material World". The Beatles' 1966 US tour: The Beatles staged their third concert tour of America in August 1966, and it was the last commercial tour they would ever undertake. The Beatles' 1966 US tour:  After the tour, they would become a studio band and focused exclusively on record production.
a studio band