You want to know if music can influence heart rate. Some participants sit in a quiet room, others hear loud heavy-metal music, while others hear soothing classical music, and another group hears...

You want to know if music can influence heart rate. Some participants sit in a quiet room, others hear loud heavy-metal music, while others hear soothing classical music, and another group hears upbeat pop music. All participants have their heart rate checked after five minutes.