Do you want to sing along with a backing track, but the key is too high? Or would you like the song to play a little faster? Then you have found the right software: MP3 Key Changer V2! Features: - NEW: Improved saving algorithms for Higher Quality editing! - Handles both MP3 and Wave files. - Transpose songs up to +/-12 semitones. - Adjust the tempo by up to half or double the original tempo (-50% to +200%) - Hear the adjustment in real-time before saving (preview quality only) - Save your edited song as MP3 or WAV. Minimum System Requirements: Win2000, WinXP, Vista, Windows 7, Win10. Soundcard, PII 500MHz, 128MB RAM Demo version fully functional, but only the first 1/3 of a song will play. You can save 3 key changes before you need to purchase and register.