James D'Angelo

“  MANTRAS: These are often referred to as sacred sounds because they are part of the practice of different religious traditions. Mantra is a Sanskrit word whose literal meaning is “that which protects and purifies the mind.” Here mind represents not only thought but also feelings. These sounds, each of which is a kind of germinating seed (in Sanskrit bija) that is implanted in the mind, are catalysts for ridding ourselves of traits that impede our spiritual unfoldment. Like toning and chanting they are sounded repetitively in a steady rhythm. They can be sounded either inwardly or aloud. Done inwardly within the mind, no tone is needed. Only the rhythm is necessary. This inner repetition is useful because it can be set in motion at any time and in any situation.   CHANTING: This is actually a form of singing characterized by the repetition of short phrases of tones, fairly narrow in range, often wedded to some kind of sacred text and done as part of a”
― James D'Angelo, The Healing Power of the Human Voice: Mantras, Chants, and Seed Sounds for Health and Harmony