Add 7b10 chords

The American way of notating these chords is 7#9, but here in Holland we normally use the b10 notation, based on the idea that there is only one 9th in a chord (because if using two different versions of one note in chord would mean that you could write 7b3 or m7b11 or something for this chord), in which case 7b9#9-chords wouldn't exist...



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Idea No. 105