Alizée live vocal mixes on YouTube

[lurzep]

Hi all!

A few weeks ago, I stumbled across this channel called "A-Life" which has been posting a number of interesting Alizée videos. Among the most interesting are a plethora of videos that contain audio of her live singing during lip synced performances. Some examples:

https://youtu.be/xqR1TjgHtvA

https://youtu.be/AXZT2pjPw8s

https://youtu.be/aXnOkO74TIg

My questions are: where did these come from? How did the person behind this channel get a hold of this audio? Are there more out there that we know of? And what else could be hidden in the vaults?