"Keep On Pushing" (The Impressions)

"Keep On Pushing" (from the 1964 album of the same name) takes its cues from gospel and soul, walking that fine line between sacred and secular, musically, vocally, and thematically.  It was prolific songwriter Curtis Mayfield's first foray into addressing social issues—specifically, the Civil Rights movement—in a song.  But it wouldn't be his last.  Shining a light on societal and political topics became a hallmark of Mayfield's music for the rest of his life.
Few songs can match the spiritual positivity of this short track.  There's just something about that jazz waltz rhythm and the elemental falsetto harmonies of Mayfield, Sam Gooden, and Fred Cash that can brighten the cloudiest day.  
Also notable is Johnny Pate's horn arrangement: an understated fanfare that's as steadfast as it is inspirational.  Having the trombones double the bassline on the verses is an especially nice touch that gives the track just an extra dash of soul.  (Pate would continue to work with Mayfield in his solo career.  In fact, his arranging work is all over the Super Fly soundtrack.)