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 and twenty-four RCA 44-BX ribbon microphones.