Intro:

      (harmonica w/piano and bass)

      G       D/F#     C/E     D74 [N/C/]
      / / / /  / / / /  / / / /  /

Verse 1:
                   G   D/F#              C/E         Am7
      The road is long      with many a winding turn
            D   D#°  Em          F               Am7  Am7/D D7
      That leads us to who knows where, who knows where
                G    D/F#                   Em   Eb
      But I'm strong      strong enough to carry him
      G                Am7 D74          G
        He ain't heavy            he's my brother
      [1:  Am7 D74]
             (So on...)
      [2:  Am7 G7/B ; to bridge]
      [3: to harmonica solo]

Verse 2:

      So on we go  his welfare is of my concern

      No burden is he to bear, we'll get there

      For I know he would not encumber me

      He ain't heavy, he's my brother

Bridge:
              C       D7/C
      If I'm laden at all
           C         D7/C
      I'm laden with sadness
            Bm         Dm
      that everyone's heart
            C7M  B7           Em G7/D
      Isn't filled    with the gladness
          C   / B A7          Am7     D7 [N/C/]
      Of love       for one another

Verse 3:

      It's a long, long road  from which there is no return

      While we're on the way to there, why not share
               G   Bm  / F# / D   / F#  / D  Em     Eb
      And the load     Doesn't weigh me down at all

      He ain't heavy, he's my brother

[harmonica solo over first two lines of verse]

Coda:
       G              D/F#  Em  D74
      He's my brother
                 G   D/F#       C7M/E   D
      He ain't heavy      he's my brother
                 G   D/F#       C7M/E   D
      He ain't heavy      he's my brother [fade]