To save someone else's life: 3 songs that have the right rhythm for CPR are Nelly The Elephant, Stayin' Alive, and Another One Bites The Dust. Sing one of these and press down on each beat, your dominant hand should be on top of your non-dominant, and they should be right in the center of the chest, between the nipples, your shoulders and elbows should be locked, and you should be using your whole upper body weight. Good luck my dudes, I hope you never have to use it.