Right here goes; this is Clapton’s classic track, Knocking on Heavens Door. It's by Clapton, not Cream but they wouldnt accept it under Claptons name!
He uses quite a clean tone with a reggae style on the album track if you want to copy his sound.

b-----------------------------------------------------15-----------15----------15----------------
g-----14b-r—14b-r--12-12-14-14~----14b16-------14b16------14b16------16r14--12--
d---------------------------------------------------------------------------------------------------

b-----------------------------------------------
g--------------12-14-12-12-12~~-----------
d----12 /14-----------------------------------

G6   D                     Am                     (lightly strum these chords while singing)
Ma, take this badge off of me                     
G6     D              C
I can’t use it anymore 
G6          D                  Am
Its getting dark, too dark to see
G6             D                      C 
Feels like I’m knockin on Heavens door  

G6          D                  Am
Knock Knock knockin on Heavens door
G6           D                  C
Knock Knock knockin on Heavens door…..(and so on)

Same for Verse 2 but with these lyrics

Ma, take these guns away from me
I can’t shoot them anymore
There’s a long black cloud far away from me
Feels like I’m knockin on Heavens door

Chorus, then….

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b----13b---13br--11---------------------------------13b---13br---11----------------------------
g-------------------------12--10--12 v(vibrato)---------------------------12--10--12v----------
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e------------------------------------------------------------------------------------------------------
b-----15b17---17---r15---15b17r15-b17-15b17r---13-----13--15---13brb15---------------
g----------------------------------------------------------------------------------------14-12-14---
d------------------------------------------------------------------------------------------------------

b---------------------------
d-----10---10---12vv----

Repeat Chorus to fade after third verse
(3rd verse is same as 1st verse)