For this sound, Bill Evans employed a rootless chord voicing that became so ubiquitous in jazz that it’s simply known as the “So What” chord. In fact, he used the voicing in two positions a step apart, even though the chord implied by the composition was a simple Dm7. How’d he know how to use this voicing? After all, the chord symbol on his chart sure didn’t say “D So What.” Take a look at the chord diagrams and the notated examples to get your hands around these famous voicings, as well as the reasons why these particular note choices work so well.