Its not for me personally

I didn't dig it either.

The singer's voice just isn't right for what they're trying to do.

Having a french accent and singing in english is always difficult. I personally thought it was both a fresh idea and very impressive for a two piece band. Obviously some parts were sequenced but it all flowed seamlessly - there's a good chance some of the non musicians had no clue there was backing tracks. The crowd loved it anyway, and I think the only advice I can give you is to get the vocalist a little more animated on stage.