Originally recorded (as “Someone to Love”) by The Great Society (1966).
Hit version by Jefferson Airplane (US #5 1967).
From the wiki: “Written by The Great Society guitarist Darby Slick and first performed by that band, which included his then-sister-in-law Grace Slick on vocals, the song made little impact outside of the club circuit in the Bay Area.
“The song was released in 1966 as a single on the North Beach subsidiary of Autumn Records and received minimal circulation and radio airplay outside of San Francisco.
“When Grace Slick departed The Great Society to join Jefferson Airplane, she took the song with her, bringing it to the Surrealistic Pillow sessions, along with her own composition ‘White Rabbit‘. This time, distributed nationwide, ‘Somebody to Love’ peaked at #5 on the US Top-40 chart.”
The Jefferson Airplane, “Somebody to Love” (1967):