Hanshi Platt used this music at the seminar in February. It as a constant C sharp tone played with ocean wave sounds overtop, and the frequency promotes concentration. You can use this music for work, relaxation or for meditation. You can download the music here: https://www.dropbox.com/sh/uo2r2gzbf88ewwt/AACK_t43zX1qghzWVU7mg7Fba?dl=0