The Rolling Stones headlined The Hyde Park Festival in July, 1969. The free festival was The Stones first public performance in 2 years and was originally intended as a gig to introduce new guitarist, Mick Taylor. Former Stone Brian Jones died 2 days before the concert, meaning it transformed into more of a memorial performance. Mick Jagger read a short eulogy followed by some verses from Percy Shelley's Adonais. After this hundreds of white butterflies were released.
"Peace, peace! he is not dead, he doth not sleep
He hath awakened from the dream of life." - Adonais, Percy Shelley.