Intro: 
 
Tra la-la-la-la la-la-la-la 
Happy birthday sweet sixteen 
Tra la-la-la-la la-la-la-la 
Happy birthday sweet sixteen 
 
Verse 1: 
 
Db F7 
Tonight's the night I've waited for 
Bbm Db7 
Because you're not a baby anymore 
Gb Gdim Db/Ab Bb7 
You've turned into the prettiest girl I've ever seen 
Eb7 Ab7 
Happy birthday sweet sixteen 
 
Verse 2: 
 
What happened to that funny face 
My little tomboy now wears satins and lace 
I can't believe my eyes you're just a teenage dream 
Eb7 Ab7 Db 
Happy birthday sweet sixteen 
 
Bridge: 
 
Ab7 
When you were only six 
Db 
I was your big brother 
Ab7 
Then when you were ten 
Db 
We didn't like each other 
Bb7 
When you were thirteen 
Ebm 
You were my funny valentine 
Eb7 {N.C.} 
But since you've grown up 
Eb7 {N.C.} 
Your future is sewn up 
Ab7 
From now on you're gonna be mine, so 
 
Verse 3: 
 
If I should smile with sweet surprise 
It's just that you've grown up before my very eyes 
You've turned into the prettiest girl I've ever seen 
Eb7 Ab7 Db A7 
Happy birthday sweet sixteen 
 
{key change} 
 
{repeat verse 3, in D 
 
D F#7 
If I should smile with sweet surprise 
Bm D7 
It's just that you've grown up before my very eyes 
G G#dim D/A B7 
You've turned into the prettiest girl I've ever seen 
E7 A7 D 
Happy birthday sweet sixteen 
 
Coda {repeat to fade}: 
 
D Bm 
Tra la-la-la-la la-la-la-la 
G A 
Happy birthday sweet sixteen