How to Change Key/Pitch, Volume and Speed of a MP3 Song | Kanto Editor
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Free Online Key/Tempo Change Tool – Song Surgeon 5 Blog
Save to MP3
MP3 Key Changer Download - Small tool able to change the key of MP3 files
Music Speed Changer, Change Tempo & Pitch of Audio Independently
10 Best Music/Song Pitch Changer App on iPhone and Android
MP3-Keychanger - Software zum ändern der Tonhöhe bei mp3-Dateien