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Jakob Wankel
VoxTune - Vocal Pitch Tuner
P. Schmidt
临吉他调谐器 Pro Guitar Tuner
ProGuitar
调音器
Michael Moessner
PitchLab Guitar Tuner (PRO)
PitchLabApp
Pitch Perfect (Pitch Pipe)
DepollSoft
Pitch Shifter
Music Topia, LLC
Tuner - Pitched!
Stonekick
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cohortor.org
Fender Guitar Tuner
Fender Musical Instruments Corporation