Written and originally recorded by Otis Redding (1965).
Hit version by Aretha Franklin (US #1/UK #10 1967).
From the wiki: “Essentially a ballad, ‘Respect’ was written by Otis Redding for Speedo Sims, who intended to record it with his band, the Singing Demons, but was unable to produce a good version. Redding then decided to sing the song himself, which Speedo agreed to. (Redding also promised to credit Speedo on the liner notes, but this never happened.)