The latest...
I have listed in this thread some frequencies that resonate with our seven main Chakras, ones that are calculated based on values like planetary, solar, and lunar cycles. These are not tones that will be found on a piano keyboard; however, chimes and tuning forks have been created to produce these tones. There are also videos on Youtube (at least one of which is linked in this thread) that play back these tones.
However, there is a different system of tones matched to Chakras that IS easily replicated by a piano.
C - Root
D - Sacral
E - Solar Plexus
F - Heart
G - Throat
A - Third Eye
B - Crown
If you are interested in using tones to clear and brighten your Chakras, and you haven't got ready access to the planetary tones posted elsewhere in this thread, it should be easy to replicate the musical pitches listed above with any musical instrument or music-producing app.
This leads me to the reason for this post. I have not got large amounts of spare funds to work with, and I have already invested in tuning forks and chimes to replicate the planetary tones mentioned above. My research into sound therapy keeps bringing me to sets of tuning forks that replicate C through B, but I haven't got funds right now to run out and get seven more tuning forks. So I have wondered what to do.
Then I ran across a tuning fork that is adjustable. The website of one of the people who have written about sound therapy, Francine Milford, has got a lot of sound therapy items for sale, including her books and about a zillion tuning forks and sets. She has got a weighted tuning fork that when you move the position of the weights, you change the tone of the tuning fork. It can be made to replicate ALL seven tones (C through B), and it only costs the price of ONE normal tuning fork.
So I set some funds aside and placed that order. My adjustable fork arrived today. So I did a nice little Chakra tuneup with it. As usual, the cats were parked outside the studio when I finished, and my dog had migrated from her regular daytime nap spot on the sofa to her dog bed where she spends the night, which is at the foot of the stairs. She doesn't normally use her dog bed during the day. She's tiny and elderly and doesn't like to climb the stairs, so she curled up in the closest cozy place to the studio, which is right at the top of the stairs.
Those critters seriously love their Chakra tones, both the planetary ones and the Western-music ones. Now I'm REALLY going to make them happy, and play the Reiki music I wrote about a few posts ago.