It is a good idea to familiarized yourself with and listen to these tonal frequencies. There is a harmonic relationship between them as all as other phenomenon like color, the movement of planets, even thought (listed below).

396 Hz - Liberating Guilt and Fear
417 Hz - Undoing Situations and Facilitating Change
528 Hz - Transformation and Miracles (DNA Repair)
639 Hz - Connecting/Relationships
741 Hz - Awakening Intuition
852 Hz - Returning to Spiritual Order

There are analgous versions of harmful tones too. Virtually everything in Western culture from radio music to band instruments is tuned to them. Be wary of what you listen to.

ARTICLE: The Use of Tonal Frequencies to Enhance, Heal, & Rejuvenate