55 years ago this week, John Lennon and George Harrison attended a dinner party where their tea was spiked with LSD. This first acid trip would open the doors to new musical experimentations and help to give birth to psychedelic rock. 

<p>55 years ago this week, John Lennon and George Harrison attended a dinner party where their tea was spiked with LSD. This first acid trip would open the doors to new musical experimentations and help to give birth to psychedelic rock.&nbsp;</p>

CHOM 97 7 is The Spirit of Rock in Montreal.

<p>CHOM 97 7 is The Spirit of Rock in Montreal.</p>