Up Tempo: Pitch, Speed Changer

Remove vocals, split any song into stems, and change pitch or speed — all on your device, with no account and no upload. Up Tempo is a music practice tool and audio editor for singers, instrumentalists, transcribers, and producers. Slow down a solo to learn it. Drop a track's key to match your voice. Isolate the drums to practice along. Loop the hard bar until it clicks. PRACTICE ANY SONG • Slow down or speed up music in real time without changing pitch • Transpose up or down by several octaves, with a preserve-formant option that keeps vocals natural • Reverse playback for ear training and transcription • Precise AB loop points on a pinch-to-zoom waveform • Save loop points, effects, and settings per track and pick up where you left off VOCAL REMOVER & STEM SEPARATION (Pro) • Runs on your device — no account, no upload, works offline once models are installed • Choose a fast 2-stem model (vocals / instrumental) or a higher-quality 4-stem model (vocals, drums, bass, other) • Solo or mute individual stems in the mixer to build instant karaoke tracks or backing tracks • Great for singers, guitarists, bassists, and drummers who want to play along with just the rhythm section EDIT & MIX • Trim music with millisecond precision; add fade in and fade out • Multi-track editor: layer, align, and mix your own tracks into new arrangements • Record vocals or instruments directly in the app (Pro) • Waveform visualisation with pinch-to-zoom for accurate edits STUDIO EFFECTS (Pro) • Equaliser, reverb, delay, compressor, noise gate • High-pass filter, low-pass filter, bass cut, panning, centre/sides isolation • Creative effects: distortion (clip, saturate, crunch, overdrive), bit crusher, ring modulator • Chain effects and toggle them on or off in real time EXPORT & SHARE • Export to MP3, M4A (AAC) at 128, 256 or 320 kbps, or FLAC lossless • Edit title, artist, album, and album artist metadata before export • Share exported tracks to any app • Backup and restore your settings, markers, loop points FREE vs PRO Free includes pitch and tempo adjustment, looping (up to 6 markers), trim, fade, 2-track mixing, and export. Pro unlocks stem separation, vocal removal, recording, all studio effects, unlimited markers, and unlimited multi-track. One-time purchase, no subscription. Up Tempo supports most common audio formats including MP3, M4A, AAC, WAV, FLAC and OGG. Questions or feedback? Contact us at support@stonekick.com. This software uses code of FFmpeg licensed under the LGPLv2.1 and its source can be downloaded below. https://stonekick.com/uptempo_ffmpeg.html http://ffmpeg.org http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

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