The "Ah" sound is an extremely powerful sound particularly useful for generating peace and compassion. The sound "Ah"which is present in the names we use for God across the religious spectrum such as Yahweh, Jehovah, Allah, Ra, Krishna, Jah, Rastafari, Bathala as well as many of the sacred words (Amen, Alleluia, Aum). Most mystical traditions worldwide also find it to be the sound of the heart chakra the center for unconditional love, compassion, empathy, forgiveness and tolerance. Yet, as a vowel sound, it defies denomination or description as a mantra and is acceptable by everyone. Here's the song I made using mostly the sound "Ah", the song is called "Kalibutan" a visayan word that means "World" the song is written in tagalog though:
Kalibutan
Jay Dilan
Kaligayahan ng katauhan
Kapayapaan hanggang kalawakan
Kaitasan ng kalangitan
Ang paglakbay ng puso at isipan
Kalibutan