
Scott S. answered 05/16/19
Professional Pianist, Songwriter and Producer living in LA!
So yeah, the basic chords are 1-4-5 but what will make your arrangement more Jazz in style is to add "transition chords" and voice your chords a little more interestingly. Both come with some instruction and practice but for starters try doing some "secondary dominants: - meaning use the 5 chord of one of the chords in the progression.
So for example, the chorus progression of this song if you're playing in D is D | G | Em | A |. Try playing Dmaj7 D7 | Gmaj7 | Em | G/A |.
Those are slightly jazzier voicings (a little lounge but good for sake of demonstration) but that D7 on beat 2 of the first chord is a secondary dominant. It's the 5 chord of the upcoming G chord. Similarly, when the chorus goes to the Bmin you can squeeze an F#7 in right before you play the Bmin. F# is the 5 of B.
A bit tricky, but with instruction and examples you can get it! This is a good first step to reharmonization I think.
s