The Heart Chakra Spirit Flute in the key of 'F♯' minor (440 Hz) is a part of our Chakra Series. These are our first Spirit Flutes available in Aromatic Cedar, a softwood that produces a warm, resonate and full musical voice. The engravings on this flute are of the mandala symbol that represents the heart chakra. The flute features a Malachite cabochon, to align with the color associated with the Heart Chakra. This flute is 17.0 inches (43.2 cm) long. This is a six hole flute, which comes with a leather hole cover that can be used to close the third hole from the top (as seen in the picture) to make learning to play very easy. The hole cover can easily be removed. We found the below website helpful when reading up on chakras and sound: Sound and the 7 Chakras