《周礼·春官宗伯·大司乐&小师》
祭祀时王出入就令演奏《王夏》；尸出入就令演奏《肆夏》；牲出入就令演奏《昭夏》。率领国子表演舞蹈。
王出入，则令奏王夏；尸出入，则令奏肆夏；牲出入，则令奏昭夏，帅国子而舞，大飨不入牲。
During sacrifices, when the king entered and left, the "Wang Xia" was played; when the corpse entered and left, the "Si Xia" was played; when the牲 entered and left, the "Zhao Xia" was played. He led the Guozis in performing dances.