it isnt that hard but it is being played in the backround towards the end
of the song so listen carefully.
[ Tab from: http://www.guitaretab.com/d/doors/5550.html ]
e-----5-7-7b-7-5-------5-7-7b-7-5---------3-5-5b-5-3-------3-5-5b-5-3-----|
B-5-7------------7-5-7------------7---3-5------------5-3-5-----------5----|
G-------------------------------------------------------------------------|
D-------------------------------------------------------------------------|
A-------------------------------------------------------------------------|
E-------------------------------------------------------------------------|
it could either be robby kreiger on the guitar as an over-dub or it could
very well be ray manzerek on his organ, but either way they keep on doing
this untill the song fades out.