Here’s the KILLER bass line from Stevie Wonder’s “That Girl.”
It sounds to me like Stevie is playing the bass line himself on the synthesizer a la “Boogie on Reggae Woman” – but perhaps those of you with more motivation to research can confirm or deny.
Where to begin with this one? The multiple song sections, the rhythms, the harmony, the tiny bass line variations… it’s a beast. Particularly the abundance of minor 7th leaps which, perhaps, take a bit less dexterity to play on the piano than the bass. But that’s also why I really like it.