If You're Happy and You Know It

Children's song

If You

BigBang

Mary, Did you know？

Mark Lowry&Buddy Greene

You and You

Johann Strauss,Jr

Happy and Gay (Op.99)

C.Bohm

Adagio and Allegro

Bach and F.P. Ricci

Let It Go（洛丹伦的夏天）

Kristen Anderson-Lopez and Robet Lopez

Happy triads

Grant Amold

If I Were A Boy

BEYONCE

Happy Halloween (Vocaloid)

Junky