Answer :
Final answer:
Beatles members John Lennon and George Harrison utilized psychedelics including LSD ('Acid') during 1965, reflecting in their later music and philosophies.
Explanation:
The two Beatles who famously experimented with LSD, colloquially known as Acid, in 1965 were John Lennon and George Harrison. The band's usage of psychedelic substances had a pronounced influence on their music and philosophies, most noticeable in their later works, such as the 'Sgt. Pepper's Lonely Hearts Club Band' album and 'Magical Mystery Tour.'
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