As we journey up the chakras, each energy center has its own corresponding mantra. Where these ancient sounds came from, I do not know. All I know is that my spiritual teacher taught them to me, and … I’ve found them useful. Mantras are just tools by which we can focus our attention on certain aspects of our spiritual understanding. And the more ancient they are, the more a mantra contains the sacred energy called Shakti. So that’s why I recommend using Lammmmm for connecting to your 1st chakra.