Ac-cent-tchu-ate the Positive: ''Mister In-Between'' "Ac-Cent-Tchu-Ate the Positive" is a popular song written in 1944 by Harold Arlen (music) and Johnny Mercer (lyrics). The song, known for its catchy, vernacular phrasing, includes memorable lines like: You've got to Ac-Cent-tchu-Ate the positive, E-lim-mi-nate the negative, Latch on to the affirmative, Don't mess with Mister In-Between. The song was featured in the 1944 Paramount film Here Come the Waves, a production that boasted a stellar ca