黑执事大结局时的歌曲

是很忧伤的女声么？那个要等OST出来，我也找了好久了，目前只有从动画里截下来的音频了。
http://bbs.breezecn.com/read.php?tid=242774

改编自英文儿歌 <<London Bridge Is Falling Down>>
全歌词如下：
London Bridge is falling down,
Falling down, falling down,
London Bridge is falling down,
My fair Lady.

Build it up with wood and clay,
Wood and clay, wood and clay,
Build it up with wood and clay,
My fair Lady.

Wood and clay will wash away,
Wash away, wash away,
Wood and clay will wash away,
My fair Lady.

Build it up with silver and gold,
Silver and gold, silver and gold,
Build it up with silver and gold,
My fair Lady.

Silver and gold will be stolen away,
Stolen away, stolen away,
Silver and gold will be stolen away,
My fair Lady.

We’ll set a man to watch all night,