Annotation errors in iReal-Pro

[andreamust]

Among the annotations of chords in the iReal-Pro dataset there are incomprehensible chords, probably due to annotation errors. Here is the list:

• A7at
• A7b9#9
• Eh, F#h, etc.
• Co^7
• Bbh9

At the moment, these chords have been interpreted as follows:

• A7at -> A7alt
• A7b9#9 -> chord containing both flat ninth and sharp ninth
• Eh, F#h, etc. -> Eb, F#b, etc.
• Co^7 -> C:dim(7)
• Bbh9 -> Bb9

To be verified with the support of musicologists whether these conversions may be meaningful.