Featuring all five Temptations trading lead vocals à la The Family Stone, "Cloud Nine" was a marked departure from the standard Tempts sound: wah-wah guitars and a harder, driving beat propelled the record, as opposed to pianos and strings. The song also features the Cuban percussionist Mongo Santamaria on conga drums. Edwards, Eddie Kendricks and Paul Williams swap leads on the verses, bridges and choruses, such as this example from the first bridge:
Otis Williams has some brief lead lines on the last half of the song (i.e.: he repeats "Reality…"), and Melvin Franklin also gets a line near the end ("There's no difference between day and night…"). The lyrics for the song were about the struggles and pains of living poor, as opposed to being about relationship and love troubles. The broke, unemployed, and despondent main character in the song proclaims that he gets over all of his problems by "riding high on 'cloud nine'". This has been interpreted by many (including Motown head Berry Gordy) as a reference to drug abuse, although Whitfield, Strong, and deny that "Cloud Nine" is about drugs.