Happy [Am] birthday to [Em] you
Happy [Em7] birthday to [Am] you
Happy [Dm] birthday, happy
[Am] birthday… Happy [E7] birthday to [Am] you
Hợp âm, lời bài hát
Happy [Am] birthday to [Em] you
Happy [Em7] birthday to [Am] you
Happy [Dm] birthday, happy
[Am] birthday… Happy [E7] birthday to [Am] you