The bass line in “I Wish” by Stevie Wonder sounds much more difficult to play than it is. The verses and chorus have the same riff that is essentially various walking patterns. The main riff is relatively easy to play after you get the muscle memory down. However, the pre-chorus is the only other riff in the song and a bit more complex to learn. If you want to learn more about Stevie Wonder, see his Wiki.
Once you master this song on bass, the pocket and groove certainly lull you in a trance.
How To Play – I Wish: Bass Tabs For Desktop & Mobile