If you had to explain funk to a visitor from outer space, Stevie Wonder’s “Superstition” would be a great place to start.
Aside from the refrains at the end of each verse, the entire tune consists of variations on a single two-bar clavinet riff on the E-flat minor pentatonic scale. The scale might have a daunting name, but it’s extremely easy on the piano: just play the black keys.
The minor pentatonic scale is found in almost all world musical cultures. It’s no great mystery why everyone likes it: you can play the five notes in any order and any combination and nothing will ever sound bad. Notice that the scale notes are right next to each other on the circle of fifths above. Each note shares a lot of its constituent overtones with its neighbor, so it’s no wonder they all feel so closely related to each other.