Crystal singing bowls at 432Hz for a happy, cosy wind-down when you want to let the day go and feel good. Crystal singing bowls ring softly and fade into one another in a slow, spacious sound bath tuned to 432Hz, running for four and a half hours. Dim the lights, set the volume low and press play as you get cosy in bed. Let it ease you out of the day so you drift off feeling calm and content. (A relaxation aid, not a medical treatment.)