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John Lennon invited Paul McCartney to play in his band: the "Quarryman" -
Ringo and George joined in the band and they became the Beatles -
first international big success -
they appeared on US television several times and the beatlemania erupted in USA -
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Queen Elisabeth II conferred on them the honor of baronets -
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They broke up because the stress of their fame was too much for them so they started solo carrers