"Quand je joue, je ne chante pas, et quand j’enregistre, je ne joue pas."

Simplified Meaning:

When a person is acting in a movie or a play, they focus entirely on playing their character and telling the story. They don’t try to do things unrelated to the acting, like singing a song because that would be distracting. Similarly, when they are in a recording studio making music, they put all their energy into singing or playing an instrument and not thinking about pretending to be someone else. It’s about doing one thing at a time really well instead of trying to do too much at once. Imagine a chef in a restaurant who is cooking a fancy meal for a customer. While the chef is cooking, they focus just on that; they don’t try to serve drinks to other customers at the same time. Later, when the chef finishes cooking, they might serve the meal or help with other tasks, but while cooking, they focus just on that. It’s the same idea: give your best effort to one task instead of spreading yourself too thin.