(thematic link?)
(from “F# blues” to “A blues”)
(with degree of ‘major” or “minor” leanings based on ‘note selection’)
(with ‘minor’ keys leaning more heavily on the ‘min7’ than ‘maj7’ note in that alphabetical ‘key’)
(there are ’12 keys’)
(in ‘western music’ that is)
(sometimes both!)
(that’s ‘chuck berry in a nusthell kiddies!’)
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