To everyone who is confused, Daft Punk and some of Phoenix were a band when they lived in a small town near Paris. For some sad reason the band broke up and the people in Phoenix made a new band with some more people later on and Thomas And Guy-Manuel started working on see new music to create Daft Punk.
They had creative differences, Laurent wanted music that sounded more like what Phoenix is today, whilst Thomas and Guy-Man wanted more of the "rave" seen kind of music that was heavily featured on Daft Punk's first album "Homework" The trio has remained great friends over the last 20 years
I first heard of Phoenix because Todd Edwards (who I met through Daft Punk) did a remix of the song "If I ever feel better", which is the song they played right before Daft Punk appeared in the video