Very simple way of playing a brilliant song. 

Intro: C, Am, Em, G (x2)

C                Am
You are astronomical
           Em
Fans of alcohol
   G
So welcome in

C                   Am
Earth rising in the east
                   Em
And setting in the west
    G 
All waving flags

C                Am
we're all waving flags now
       Em
Waving flags
    G
But don't be scared

C                    Am  
'Cause you, you're only here
      Em
For a while
         G     F
And it's all a joke
G             F              
Oh it's all a joke
G
Ohhhhh!

C,Am,Em,G

C                         Am
Are you of legal drinking age?
           Em 
On minimum wage?
     G
Well welcome in

C                    Am
From across the Vistula
                    Em 
You've come so very far
    G
All waving flags

C                Am
we're all waving flags now
       Em
Waving flags
    G
But don't be scared

C                    Am  
'Cause you, you're only here
      Em
For a while
         G     F
And it's all a joke
G             F              
Oh it's all a joke
G
Ohhhhh!

F
Beer is not dark
G
Beer is not light
F
It just tastes good
G
Especially tonight

F, G, C, Am (x3) F, G, C, Em

Em         Am
So welcome in
          Em
We are barbarians
           Am
Oh welcome in
              Em
Across the Carpathians
            Am
Oh we can't fail
            Em  
We are from Slavia
           Am
Oh welcome in
           Em   
Across the stadion

Em         Am
Oh we can?t fail
               Em
Not with Czech Ecstasy
           Am
No we won?t fail
               Em
Not with Czech Ecstasy
           C
So welcome in