happy birthday
bwon kom-ple-AN-no
The Italian birthday song starts: 'Tanti auguri a te, tanti auguri a te, tanti auguri caro/cara [name]...'
Buon compleanno, Maria! Quanti anni compi?
Happy birthday, Maria! How old are you turning?
Tanti auguri e buon compleanno!
Best wishes and happy birthday!