The important chakras are stated in Hindu and Buddhist texts to be arranged in a column along the spinal cord, from its base to the top of the head, connected by vertical channels. The tantric traditions sought to master them, awaken and energize them through various breathing exercises or with assistance of a teacher. These chakras were also symbolically mapped to specific human physiological capacity, seed syllables (bija), sounds, subtle elements (tanmatra), in some cases deities, colors and other motifs.
There are numerous sound that seem to resonate the chakras. Among the most popular are the use of vowels and the use of mantras. This use of vowels seem to be highly effective in balancing the chakras. The Sacred Vowel are considered sacred in many different traditions and Mystery Schools throughout the planet, including ancient Egyptians, Hebrew, Islamic, Tibetan, Japanese and Native American. There are a number of different systems of Sacred Vowels to balance the chakras. I have utilized a system of sounding the sacred vowels that came to me many years ago and that I have shared effectively with thousands of people. (https://www.healingsounds.com/sound-and-the-chakras/)