Build a creator BGM pack
Turn one AI-generated BGM file into multiple useful versions for Shorts, loops, and narration beds.
Load BGM, then drag the waveform to choose the strongest source window for every pack variant.
Pack Builder creates WAV variants locally. It does not generate new music and does not upload your audio.
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Files uploaded by this tool: 0
Processing: Local browser session where supported
Saved data: Not stored by this page