求一首很轻快的英文歌，是一个广告的音乐，女生唱的，刚开始没有歌词，就是嗒 嗒啦嗒 嗒啦嗒 嗒啦嗒啦嗒…

Question

歌词好像有i don't know why、it's a joke和nobody knows。有知道的嘛？

Answer 1

Lenka - The Show
http://www.tudou.com/programs/view/ny2uHgK3WSY/
就是唱Trouble Is a Friend的那女孩

Answer 2

Lenka - The Show
http://www.tudou.com/programs/view/ny2uHgK3WSY/

Answer 3

tik tok

Answer 4

不清楚