Love Cake. Love.
We opened for them when I was in high school. Well, technically we opened for Little Guilt Shrine who opened for Cake, but same difference.
IMO, bass playing doesn't get too much better than this. Fantastic tone, great groove, and deceptively difficult lines that propel the song along without ever being obtrusive. I like Nelson's style for the same reason I like JMJ's work.
Two of my favorite lines:
Meanwhile Rick James and
Love Her Madly. Hell, I think it's a Moog (or at least doubled by one), but I dig the groove from
Palm of Your Hand too. I could go on and on.
As far as the tone, it's a P-Bass with flats the tone rolled off through a an old GK. He uses a fair amount of muting, whether fingerstyle or with a pick.
Personally, I don't think the brand of strings matters nearly as much as the P-Bass and the right hand technique. In fact, I've gotten reasonably close with rounds.