Surgeons who listened to AC/DC's 'Highway to Hell' and 'T.N.T.' in the trials went from taking 236 seconds to make an incision to 139, while they were also five per cent more accurate.  The Beatles' 'Hey Jude' and 'Let It Be' also sped up the time taken to stitch up wounds by a whopping 50 per cent; however, this was true only when the music was played at a low volume.  Overall, the study found that "soft rock and hard rock" can improve surgical performance.

Lead researcher Cui Yang from Heidelberg University, Germany, wrote in Langenbeck’s Archives of Surgery journal: “Our results show that both soft rock and hard rock can enhance surgical performance.  “For hard rock music, the positive effect was especially noticeable when the music was played at a high volume.  “It is possible that music with high rhythmicity could provide a tempo to keep up the speed of the performance and thus enhance task performance.”  Read more on this story here. 

If this makes little to no sense to you, try reading this article that you can find here, which further explains research done on the influence on rock music and brain power.