Grateful Dead - Playing In The Band Chords & Tabs

I saw a version of this that doesnt sound quite correct. This seems to sound more like 
I also have the jam riff you can figure the rest on your own.
have fun.
Josh
2-17-05

[ Tab from: https://www.guitartabs.cc/tabs/g/grateful_dead/playing_in_the_band_tab_ver_2.html ]
Intro riff       repeat several times
1
e]----------2-----------2------------2--------5--5--3--2h3p2-----------------|
b]--------3-----------3------------3----------------------------3------------|
g]-----2------------2------------2-------------------------------------------|
d]---0------------0------------0---------------------------------------------|
a]---------------------------------------------------------------------------|
e]---------------------------------------------------------------------------|
This riff leads into the jam. play this riff with the bass for a while and then alernate 
riff3
2
e]--------------------------------------------------------------------------|
b]--------------------------------------------------------------------------|
g]--------------------------------------------------------------------------|
d]---------------10---------------------------------------------------------|
a]------12---12------------12---12--10--------12---12---10h12---------------|
e]--------------------------------------------------------------10----------|
3
e]----------------8----------------------------------------------------------|
b]------10---10------------10---10--8---------10---10---8h10-----------------|
g]--------------------------------------------------------------7------------|
d]---------------------------------------------------------------------------|
a]---------------------------------------------------------------------------|
e]---------------------------------------------------------------------------|