According to Alec Wilder the song, 56 measures long, has a wonderful, soaring melodic line, free from pretentiousness, but full of passion and intensity which is superbly supported by the lyrics. Although the catch phrase "day in—day out" sounds like a dull routine, Mercer uses exotic images to contrast with the boring sound of the phrase.
Day in, day out, That same old voodoo follows me about That same old pounding in my heart, Whenever I think of you And darling, I think of you, Day in and day out
Day out, day in, I needn't tell you how my days begin When I awake I get up with a tingle, One possibility in view That possibility of maybe seeing you
Come rain, come shine, I meet you and to me the day is fine Then I kiss your lips, And the pounding becomes The ocean's roar, a thousand drums Can't you see it's love, Can there be any doubt When there it is, day in, day out