Unity 528 Hz in 7.5 Hz (Theta binaural beats & Isochronic synthesis)
http://www.youtube.com/watch?v=LdG81X-3eHg&feature=context&context=G21fab5bFUAAAAPAATAA
http://www.youtube.com/watch?v=LdG81X-3eHg&feature=context&context=G21fab5bFUAAAAPAATAA