The Concert Sinatra is an album by American singer Frank Sinatra that was released in 1963. It consists of showtunes performed in a 'semi-classical' concert style. Marking a reunion between Sinatra and his frequent collaborator, arranger Nelson Riddle, it was the first full-album Riddle arranged on Sinatra's Reprise Records label. Riddle's orchestra consisted of 76 musicians, then the largest assembled for a Sinatra album, and was recorded at four soundstages on the Goldwyn Studios lot using eight tracks of Westrex 35mm film (see sound follower) and twenty-four RCA 44-BX ribbon microphones.