Nirvana
Aneurysm

Intro/outro (Riff 1)

G:------------------------------------|
D:------------------------------------|
A:----------3-3-3-3--2-2-2-2--0-0-0-0-|
E:-2-2-2-2----------------------------|

Interlude (Riff 2)

G:-------------------------------------------------|
D:-------------------------------------------------|
A:-------------------------------------------------|
E:-2~----------2~----------2~----------2~----------|

Start of verse 1 (Riff 3)

G:-----------------------------------|------------------|
D:-----------------------------------|------------------|
A:-----------------------------------|------------------|
E:-222222222222222222222222222222222-|-5-5-5-5555555555-|

G:------------------|------------------|
D:------------------|------------------|
A:------------------|------------------|
E:-2222222222222222-|-5-5-5-5555555555-|

Verse (Riff 4)

G:---------------------------------|------------------------------|
D:---------------------------------|--------------------3---------|
A:-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-|-5--5--5--5-5-5-3-5---5-3-2-0-|
E:---------------------------------|------------------------------|

G:---------------------------------|------------------------------|
D:---------------------------------|------------------------------|
A:-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-|-5--5--5--5-5-5-5-5-3-5-3-5-3-|
E:---------------------------------|------------------------------|

G:---------------------------------|------------------------------|
D:---------------------------------|------------------------------|
A:-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-|-5--5--5--5---3-5---3-5---5---|
E:---------------------------------|------------2-----2-----2---2-|

G:---------------------------------|------------------------------|
D:---------------------------------|------------------------------|
A:-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-|-5--5--5--5-5-5-5-5-5-5-5-5-5-|
E:---------------------------------|------------------------------|

Chorus (Riff 5)

G:-----------------------------|
D:-----------------------------|
A:-----------------------------|
E:-2-2--4-5-5--6-7-7--6-5-5--4-|

Order

Guitar plays intro riff twice
Riff 1 x 12
Riff 2 x 2
Riff 3 x 1
Riff 4 x 1
Riff 1 x 8
Riff 4 x 1
Riff 5 x 8
Riff 2 x 1
Riff 1 x 14
Riff 2 x 2

Credit to Jay Kural. I found his tab a bit confusing, so I cleaned it up a bit. Hopefully it's easier to understand.

planty_the_punk_pirate@yahoo.co.uk (Believe it or not, I tab things myself sometimes. I'm just too lazy, which is why I usually copy off someone else)