I have listened to binaural beats before while focusing on leaving my body and my body got numb and tingly. Now do I need the music or can I do it without it?
You can do it without it.
marilyn manson, metallica, judas priest, to name a few for projecting...:)
seriously, it doesn't matter what you listen too but it is best to be in a calm, relaxing environment.
tvos
Music is not necessary though it does help some to relax. Binaural beats are just a tool to help move the brain more easily into the correct state... however the same state can be achieved purely by relaxation and meditation/visualization.