Apparently she sang five titles. Ella Elle L'a and JPVA are the only ones I know of for sure. She is already back in Ajaccio, so this was a very quick trip, probably solo. The background dancers knew what to do already, so maybe this has been planned for a while, and just waited until Alizee felt comfortable enough to make the trip.
So was this just a paycheck or a hint of bigger things to come?
I don't think she would say no to continue singing on a freelance basis.