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Love the train of unaries, !
My teacher made something of C# also being D?, so
q)note:{flip(x?`$'y)rotate:x}[`$"`"vs"C`C#|Db`D`D#|Eb`E`F`F#|Gb`G`G#|Ab`A`A#|Bb`B"] q)note "EADGBE" E A D G B E F A#|Bb D#|Eb G#|Ab C F F#|Gb B E A C#|Db F#|Gb G C F A#|Bb D G G#|Ab C#|Db F#|Gb B D#|Eb G#|Ab A D G C E A A#|Bb D#|Eb G#|Ab C#|Db F A#|Bb B E A D F#|Gb B C F A#|Bb D#|Eb G C C#|Db F#|Gb B E G#|Ab C#|Db D G C F A D D#|Eb G#|Ab C#|Db F#|Gb A#|Bb D#|Eb