proschanie s volshebnoy stranoy 3

Enharmonic chords: C# = Db, D# = Eb, F# = Gb — same pitch, different spelling

Key signatures, relative and neighbouring keys, and their diatonic chords

Dorian, Phrygian, Lydian and other modes with characteristic tones

Tuning catalog for guitar, ukulele, banjo and bass — standard and alternate