After the 1968 Aldeburgh Festival, Britten came down with an infection, which was diagnosed as sub-acute bacterial endocarditis.
He studied at the Royal College of Music, but was detached from the musical "establishment", causing many of his works to be ignored until Britten revived them years later at the Aldeburgh Festival.
The tenor that much of Britten's work is for; Britten and Pears were close friends and emigrated to North America together.