An air ax is an imaginary musical instrument, usu guitar or sax; but obliged if musically inclined might explain meaning of fake-shred--thanks kindly all

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... Air Bass." Now, I feel like anyone can pick up an air ax and fake-shred like they're Slash, but it takes a heavier mettle to fake-lay down the low-end grooves ...
www.improvresourcecenter.com/ mb/archive/index.php/t-6482 - 101k

dalehileman