Lokah Samastah Sukhino Bhavantu is a Sanskrit mantra which means:
“May all beings everywhere be happy and free, and may the thoughts, words, and actions of my own life contribute to that happiness and to that freedom for all.”
A mantra from the Vedic tradition, where mantras are chanted on only three notes. SA, RE, and NI. Over time, mantras such as this one have been turned into countless melodies and rhythms. I learned this particular one from Slivia Nakkach. She learned it on her travels in India.