Main riff 1
E------------------------------------------------------------------
B-------------------------------------------------------5----------
G--------------------5-------4-4------7-------5---5---------7---7--
D---------7---7----------------------------------------------------
A----7-------------------------------------------------------------
E------------------------------------------------------------------
Main riff 2
E------------------------------------------------------------------
B-------6-----5--5-------------------------------------------------
G----------------------5-----7--7 ----4-----5--5-------------------
D--------------------------------------------------------7---------
A------------------------------------------------------------7-----
E------------------------------------------------------------------
E------------------------------------------------------------------
B------------------------------------------------------5-----------
G--------------------5-------4-4------7-------5---5-------7---7----
D---------7---7----------------------------------------------------
A----7-------------------------------------------------------------
E------------------------------------------------------------------
E minor
E----------------------------------------------------------0--
B-------6------5--5----------------------------------------0--
G----------------------5-----7--7------4-------------------0--
D--------------------------------------------7-------------2--
A----------------------------------------------------------2--
E----------------------------------------------------------0--
[ Tab from: https://www.guitartabs.cc/tabs/p/phish/first_tube_tab_ver_4.html ]
Play the two main riffs and then play the A minor
E-0-
B-1-
G-2-
D-2-
A-0-
E---
Play the two main riffs and then play an E minor
E-0-
B-0-
G-0-
D-2-
A-2-
E-0-
Then play the two main riffs and the play A minor, play this 3 times
E-------0--------------------5------3------0
B-------1--------------------7------5------1
G-------2--------------------7------5------2
D-------2--------------------7------5------2
A-------0--------------------5------3------0
E-------------------------------------------
Then play this for four measures
E---------------------------------------
B---------------------------------------
G-------14---14---14---14---14---14-----
D---------------------------------------
A---------------------------------------
E---------------------------------------
Then play the two main riffs again then play A major D major
A D
E-0- E-2-
B-2- B-3-
G-2- G-2-
D-2- D-0-
A-0- A---
E--- E---
For a few measures after those chords are played Trey plays this;
E-----------------------------------------------
B---2---2---3---3--2--3-------------------------
G-----------------------------------------------
D---2---2---4---4--2--4-------------------------
A-----------------------------------------------
E-----------------------------------------------
Then at the crazy jam part at the end, Trey plays this
with delay box set around 600ms(this is played real fast)
E------17---14---17---14---------14-------------------------
B---------------------------17--------17----14-----14-------
G------------------------------------------------16-------14
D-----------------------------------------------------------
A-----------------------------------------------------------
E-----------------------------------------------------------
In the jam part at the end you don't have to follow these exact
notes, in fact it would be best if you made something up but
following that pattern