http://www.youtube.com/watch?v=i5EJKW9LgA8 - Video Cover

Like i said on my bass tab for this, Im a HUGE Katy Fan, so i thought i might as well make a guitar one to. Im more of a lead guitarist then ryhtm so im going to right a lead guitar tab for this.

Verse (Acousto+Electric,Different Patterns Though)
E|-----------------------------------------------------------------------------------------------|
B|-----------------------------------------------------------------------------------------------|
G|-----------------------------------------------------------------------------------------------|
D|--44444444444-1111111111111111111111-13131313131313131313---------99999999999------------------|
A|--44444444444-1111111111111111111111-13131313131313131313---------99999999999------------------|
E|--22222222222-9 9 9 9 9 9 9 9 9 9 9-1111111111111111111111--------77777777777------------------|

You might find that the 3 note powerchords just to heavy for Katy, so try a 2 note instead, i personally think the 3 note gives it a more rockier sound which fits with the drums better. Also its 11' and 13's, not 1's and 3's.

Pre Chorus
e|----------------------------------------------| Also like the bass tab i made,that end power 
B|----------------------------------------------| chord of 466  isn’t actually meant to be there,  
G|--8~-------6~-------4~-------6-6-6-6-66666666-| i find it just sounds better, it's down to 
D|--8~-------6~-------4~-------6-6-6-6-66666666-| preference really,Also, the tempo I gave,I find 
A|--6~-------4~-------2~-------4-4-4-4-44444444-| it gives agood build up, but if you don’t want  
E|----------------------------------------------| it experiment about until you find something which suits you and if you dont want the chord make sure you hold the chord of 244 TWICE as long as the 2 preceding it.

Chorus Guitar 1
E|-----------------------------------------|
B|-----------------------------------------|
G|-----------6666666-----------------------| "If you wanna ride.."-"With your heart"
D|---4444444-6666666-6666666--9999999------|
A|---4444444-4444444-6666666--9999999------|
E|---2222222---------4444444--7777777------|

E|-------------------------------------------|
B|-------------------------------------------|"Dont make a bet.."-"For me,for me"
G|-----------6666666-------------------------|
D|---4444444-6666666-6666666--99-88-66-44----| I find it sounds great if you step down with the 
A|---4444444-4444444-6666666--99-88-66-44----| bass,again, it's my prefrence, if you dont like  
E|---2222222---------4444444--77-66-44-22----| it, just keep plaing 977.

E|-----------------------------|
B|-----------------------------|
G|-----------6666666-----------|"Cause I can be.."-"If you can afford me"
D|---4444444-6666666-6~-9~-----|
A|---4444444-4444444-6~-9~-----|
E|---2222222---------4~-7~-----|

Chorus Guitar 2

E|-2-4-66-44-2-1-2-4-66-4-2-1|                                    E|-2-4-66-44-2-1-----|
B|2-2-2---------0-0-0--------|                                    B|2-2-2--------------|
G|---------------------------|                                    G|-------------------|
D|---------------------------|    X2 for the 3rd part, play this  D|--------------6~-9~|
A|---------------------------|                                    A|--------------6~-9~|
E|---------------------------|                                    E|--------------4~-7~|

Verse 
E|-----------------------------------------------------------------------------------------------|
B|-----------------------------------------------------------------------------------------------|
G|-----------------------------------------------------------------------------------------------|
D|--44444444444-1111111111111111111111-13131313131313131313---------99999999999------------------|
A|--44444444444-1111111111111111111111-13131313131313131313---------99999999999------------------|
E|--22222222222-9 9 9 9 9 9 9 9 9 9 9-1111111111111111111111--------77777777777------------------- 

Come in at the same time as the first verse. 

During the acoustic, the elctric plays, this is how I THINK it goes:

E|---------------------------------|
B|---------------------------------|
G|---------------------------------| X2
D|---------------------------------|
A|---------------------------------|
E|2b~-2b~-9b~-9b~-11b~-11b~-7b~-7b~|

Pre Chorus
e|----------------------------------------------| 
B|----------------------------------------------|   
G|--8~-------6~-------4~-------6-6-6-6-66666666-|  
D|--8~-------6~-------4~-------6-6-6-6-66666666-|  
A|--6~-------4~-------2~-------4-4-4-4-44444444-|  
E|----------------------------------------------|   

Chorus
E|-----------------------------------------|
B|-----------------------------------------|
G|-----------6666666-----------------------|  "If you wanna ride.."-"With your heart"
D|---4444444-6666666-6666666--9999999------|
A|---4444444-4444444-6666666--9999999------|
E|---2222222---------4444444--7777777------|

E|-------------------------------------------|
B|-------------------------------------------|
G|-----------6666666-------------------------|
D|---4444444-6666666-6666666--99-88-66-44----|"Dont make a bet.."-"For me,for me"
A|---4444444-4444444-6666666--99-88-66-44----|  
E|---2222222---------4444444--77-66-44-22----| 

E|-----------------------------|
B|-----------------------------|
G|-----------6666666-----------|"Cause I can be"-"If you can afford me"
D|---4444444-6666666-6~-9~-----|
A|---4444444-4444444-6~-9~-----|
E|---2222222---------4~-7~-----|

Chorus Guitar 2

E|-2-4-66-44-2-1-2-4-66-4-2-1|           E|-2-4-66-44-2-1-----|
B|2-2-2---------0-0-0--------|           B|2-2-2--------------|
G|---------------------------|           G|-------------------|
D|---------------------------|    X2     D|--------------6~-9~|
A|---------------------------|           A|--------------6~-9~|
E|---------------------------|           E|--------------4~-7~|

Solo
e|-----------------------------------------------|
B|-111111111111111-99999999-666-777--------------|
G|---------------------------------66-4444444----| This is exactly how to play it, but dont
D|-----------------------------------------------| be afraid to play about with it, theres so
A|-----------------------------------------------| many ways to change the solo so it suits a sound
E|-----------------------------------------------| you wanna capture, also, listen to live versions
The guitarist oft puts in extra notes.
e|-------------------------------------------------------------|
B|111111-999-1111--141414-121212-1515-161616-141414-121212-11-7|
G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|-------------------------------------------------------------|
E|-------------------------------------------------------------|

Chorus Till End

E|-----------------------------------------|
B|-----------------------------------------|
G|-----------6666666-----------------------|  "If you wanna ride.."-"With your heart"
D|---4444444-6666666-6666666--9999999------|
A|---4444444-4444444-6666666--9999999------|
E|---2222222---------4444444--7777777------|

E|-------------------------------------------|
B|-------------------------------------------|
G|-----------6666666-------------------------|
D|---4444444-6666666-6666666--99-88-66-44----| "Dont make a bet.."-"For me,for me"
A|---4444444-4444444-6666666--99-88-66-44----|  
E|---2222222---------4444444--77-66-44-22----| 

E|-----------------------------|
B|-----------------------------|
G|-----------6666666-----------|"Cause I can be.."-"If you can afford me"
D|---4444444-6666666-6~-9~-----|
A|---4444444-4444444-6~-9~-----|
E|---2222222---------4~-7~-----|

Chorus Guitar 2

E|-2-4-66-44-2-1-2-4-66-4-2-1|           E|-2-4-66-44-2-1-----|
B|2-2-2---------0-0-0--------|           B|2-2-2--------------|
G|---------------------------|           G|-------------------|
D|---------------------------|    X2     D|--------------6~-9~|
A|---------------------------|           A|--------------6~-9~|
E|---------------------------|           E|--------------4~-7~|