You'
ve got to accentuate the positive, Eliminate the
negative, Latch on to the affirmative,
Don't
mess with
Mister In-between." These
lines are repeated over and over throughout the
song. The
song appeared in 1945 in the film Here Come the Waves, sung by
American entertainer Bing Crosby (1904–1977) and the female
trio known as the Andrews
Sisters. The
phrase itself literally means to give prominence to or emphasize something positive, constructive, etc.