[Intro: ]G   Em C  D 

G                         Em                C 
Happy Birthday   To you          
                       D 
This is your  day 
G                   Em 
On this day for You  
            C                                  D    
Gonna love you in every way 
                       G              Em 
This is your day your da-a-ay 
C                        D 
Happy birthday 
      G                          Em 
To You (to you) to you (to you) 
      C   D 
To you 

And it repeats one more time