Classe literally means "class" or "style" in French. It's a word that embodies elegance, sophistication, and a certain je ne sais quoi.
In Corneille's song, he repeatedly emphasizes doing things "avec classe" (with class). It's not just about being polite, but about approaching romance and desire with respect, charm, and a unique, refined style that sets him apart. This word is central to the song's message and its memorable hook.
Corneille's "Avec Classe" is a super charming and clever song about how to approach someone you're interested in, especially when you might not have a lot of money or flashy things to offer. He's basically saying, "Hey, I know other guys have tried to impress you with all the usual stuff, but I'm different!" He invites her to stay and listen, assuring her that his approach is "bien beaucoup plus subtile que ça" [much more subtle than that].
He admits, with a bit of humor, that he initially noticed her looks – "Ok j'avoue, c'est pas vrai je le confesse" [Okay, I admit, it's not true, I confess] – but quickly emphasizes that he also sees and appreciates everything else about her. He sings that it's her "classe" [class/elegance] that truly attracts him, and he desires her "dans l'respect en tout cas" [with respect, in any case]. He even gives advice to other guys, reminding them to treat women with respect because "On a tous une sœur, et nos mères ont été jeunes une fois" [We all have a sister, and our mothers were young once]. It's all about being smooth and respectful, and he confidently states, "C'est avec classe et ça marche à chaque fois!" [It's with class and it works every time!]