The word crisis- is from the Greek, meaning a moment to decide.- The recurrent moments of crisis and decision when understood, are growth junctures, points of initiation which mark a release from one state of being and a growth into the next.
The purpose of sound is silence.
In chanting, one tries to find one's own sound, literally, and then to go within that-to find the sounds within one's own sound, to bring out that which is within, to go into, explore and discover oneself.