There’s a reason why we play music. Performing music makes us high. Every musician who’s ever gigged has experienced the rush on stage when you played something so cool that they rest of the band would give you that acknowledging smile. Or when the whole band does something at once in such a tight fashion that it’s like thinking with the same mind. Or hearing the whistles and applause at the end of a song. That’s what keeps us doing it. Now new research confirms what we’ve always known.