Somebody That I Used To Know (曾经熟悉的人) Somebody that I used to know (最熟悉的陌生人) Somebody that I used to know Somebody That I Used To Know(最熟悉的陌生人) Somebody I used to know / Somebody I used to know : Someone that i used to love Somebody That I Used To Know (最熟悉的陌生人)/Gotye 高堤叶;