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Nikhil Mani
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![Fretboard with F chord][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=pimage.jpeg&userId=2963703 [2]: https://www.wolframcloud.com/obj/cfe8e6c0-fc58-45af-8629-eb079659382d