This is by far 1 of the coolest basslines by Tool, & I had to include it. Just use a pick & use drop D tuning.
Tab from Maximum Guitar magazine
x=mute
figure 1--beginning, play 7 times
G-7-7----------7-7-------------|
D-0-0-x-x-x-x-0-0-x--x-x--x-x-|
A-5-5-x-x-x-x-5-5-x--x-x--x-x-|
D-0-0----------0-0-------------|
G-7-7-----7-7-7-7--8-8-8-8\5-5/7-|
D-0-0-x-x-0-0-0-0----------------|
A-5-5-x-x-5-5-5-5--5-5-5-5\3-3/5-|
D-0-0-----0-0-0-0--0-0-0-0-------|
figure 2-play 1st bar followed by 2nd or 3rd bar 4 times; play notes
in {#} 4th time
G-7-7----------7-7-------------|-7-7----------7-7-------------|
D-0-0-x-x-x-x-0-0-x--x-x--x-x-|-0-0-x-x-x-x-0-0-x--x-x--x-x-|
A-5-5-x-x-x-x-5-5-x--x-x--x-x-|-----x-x-x-x-----x--x-x--x-x-|
D-0-0----------0-0-------------|-----------------------------|
G-7-7---------7-7-{7}-----|
D-0-0-x-x-x-x-0-0---------|
A-5-5-x-x-x-x-5-5---------|
D-0-0---------0-0-----{0}-|
figure 3--1st & 2nd verses; repeat 1st bar 3 times
G-7-7----7-7-----||-7-7----7-7---7-|
D-0-0----0-0----.||-0-0----0-0---0-|
A-5-5----5-5----.||-5-5----5-5---5-|
D----------------||----------------|
play bar 1 of figure 3 3 more times, followed by:
G-7-7----7-7--------7-7-7-7-|
D-0-0----0-0--x-x-x-0-0-0-0-|
A-5-5----5-5--x-x-x-5-5-5-5-|
D---------------------------|
figure 4--during pre-chorus; use bottom D string only & repeat
D-12--12-12--12-12-12-12-12-12-12-12--0-|-3--3-3--3-3-3/13-13-13-13--13-|
figure 5--chorus; play 3 times
G------7-7-|-------------------------|
D------0-0-|-----1-1-----------------|
A------5-5-|-------------------------|
D-0--------|-1---------3-3-3-3-3-3-0-|
G------7-7-|------------------------|
D------0-0-|----1-1--1---------3--0-|
A------5-5-|------------/3-3-3------|
D-0--------|-1----------------------|
figure 6--then follow with this & play 1st bar 3 times
G-7-7----------7-7---------------||-7-7----------7-7---7--7--7-|
D-0-0-x-x-x-x-0-0-x--x-x-x-x-x-.||-0-0-x-x-x-x-0-0---0--0--0-|
A-5-5-x-x-x-x-5-5-x--x-x-x-x-x-.||-5-5-x-x-x-x-5-5---5--5--5-|
D-0-0----------0-0---------------||-0-0----------0-0---0--0--0-|
go back to figure 3 & follow sequence to the 2nd verse; substitute 2nd bar
of figure 6 with this, letting low D string ring & listen for rhythm:
G----------|----|----14-----14-----14----|-15--12--12--15--12-|
D----------|----|-0------0------0------0-|------0-------0-----|
A-5-----5-|-5--|------------------------|--------------------|
D-0-----0-|-0--|------------------------|-(0)----------------|
G-14---14--14---14----14--14--14--14-|-15--15---17\14-|
D--0----0---0----0-----0---0---0---0-|--0---0----0----|
3rd verse--"I am just a..."
G-14--14---14---14---14-|-15--15---12--12---12-|
D--0---0----0----0----0-|--0---0----0---0----0-|
G-14--14--14--14---14-|-15--15--12\-|----|
D--0---0---0---0----0-|--0---0---0--|-0--|
follow with straight 16th notes
A-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-|-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-|
A-6-6---6-6-|
then go back to figures 5 & 6 (chorus)
figure 7--ending in double time, played 4 times
G-------------------|-----------------|-----------------|-------------|
D-0-0-3-0-0-0-6-0-|-3-0------------|-0-0-3-0-0-0-6-0-|-3-0-0-3/5-5-|
A-------------------|-----------------|-----------------|-------------|
D-------------------|------0-3-3-3-0-|-----------------|-------------|
then back to original tempo; play 3 times; notes with *--* are harmonics
G-7-7-*5-5*-------7-7-*5-5*-------*5-5*-----|
D-0-0-------*5-5*-0-0-------*5-5*-----------|
A-5-5--------------5-5---------------------5-0-|
D-0-0--------------0-0------------------------|
ending 2 measures
G-7-7---7-7----|-7-7---7-7-|
D-0-0---0-0----|-0-0---0-0-|
A-5-5---5-5----|-5-5---5-5-|
D-0-0---0-0----|-0-0---0-0-|