Where does the groove come from?

[Juho L]

About two hours ago I came from Jaco Pastorius tribute gig. That band was awesome! Bloody good players and the music just grooved insanely. It got me wondering that where does that groove come from? You really can't hear that kind of thing on electronic music (it's even rare on any kind of recording). Does the groove come from seamless drum/bass co-operation or is it just tiny bits of skill on the notes played?

If someone gains a skill to get that kind of groove on electronic music, he/she will be rich and legendary.