[joshcsimmons]

biggest pet-peeve on strudel - no "type"checking for chord names, like what if I write "Xm" as a chord - I should be aware of this in the REPL. Does AETHRA solve?

[CzaxTanmay]

If you mean 'Xm' as any chord like Gm or Cm instead of 'X' then yes, ÆTHRA can kind of solve it.