ChordPhobia
https://itunes.apple.com/jp/app/chordphobia/id515168674?mt=12

IntervalPhobia
https://itunes.apple.com/jp/app/intervalphobia/id515175677?mt=12

ScalePhobia
https://itunes.apple.com/jp/app/scalephobia/id515177328?mt=12

InversionPhobia
https://itunes.apple.com/jp/app/inversionphobia/id515177313?mt=12

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