"The Siamese Cat Song" (sometimes known as "We Are Siamese") is the fourth song of the film Lady and the Tramp sung by Si and Am, Aunt Sarah's two Siamese cats. They sing it when Lady first meets them; and during it, they cause much destruction in the house which ends up on her head. They are voiced by Peggy Lee, who recorded her voice twice to get the effect of both of them singing in this song.