Play an Fm7 chord on the piano by playing an F in your left hand and F, Ab, C and Eb in your right hand. Play the bass note with your left hand on the first beat and the other notes in your right hand on the second and third beats. Since this song is in 3/4 time, the rhythm will sound like this: 1,2,3, 1,2,3 (three beats per measure). The emphasis will be on the first beat. Play the Fm7 for one measure.
Play a Bbm7 chord by playing a Bb in your left hand and the notes Bb, Db, F and Ab in your right hand. Use the same pattern of the bass note on the first beat and the right-hand notes on the second and third beats. Play this chord for one measure.
Repeat the Fm7 chord and the Bbm7 chord for one measure each on the introduction. Repeat these two chords for one measure each again on the first line of the first chorus ("What the world needs now is love, sweet love...").
Play an F#6 chord for two measures on the lyrics "It's the only thing that there's... ." Form the F#6 chord by playing an F# in your left hand and an F#, A#, C# and D# in your right hand.
Play an Ab6 chord for the line "just too little of....What the... ." Form this chord by playing an Ab in your left hand and an Ab, C, Eb and F in your right hand. Play this chord for two measures.
Repeat the Fm7, Bbm7, Fm7, Bbm7, F#6 chord progression for the lyrics "What the world needs now is love, sweet love, No not just for some but for... ." Finish the first chorus with an F7 chord. Play this chord by playing F in your left hand and F, A, C and Eb in your right hand. This will coincide with the lyric "everyone."
Play a Bbm9 for the line "Lord, we don't need another mountain, There are... ." Form this chord by playing Bb in your left hand and Bb, C, Db and F in your right hand.
Play an Abm7 for "mountains and... ." Play this chord by playing Ab in your left hand and Ab, B, Eb and Gb in your right hand. Follow this chord with a C#7 chord on "hillsides." This chord is formed by playing a C# in your left hand and C#, F and G# in your right hand.
Play F#maj9 on the words "enough to, " followed by an F#6 on "climb." Form the F#maj9 by playing F# in your left hand and F#, G#, A# and C# in your right hand.
Play an Abm7 on "There are oceans and...," followed by a C#7 on "rivers" and an F#maj7 on "enough to cross." Form the F#maj7 by playing F# in your left hand and F#, A#, C# and E in your right hand.
Play a Bbm7 on "Enough to last..." and an Eb7 on "til the end of... ." Form Eb7 by playing Eb in the left hand and Eb, G, Bb and Db in the right hand. End the first verse with an Ebm7/Ab chord, for which you play Ab with your left hand and Eb, Gb, Bb and Db with your right hand.
Repeat the previous progressions for the second verse and additional choruses.