Replace Section
Replace History
Replace Any Section of a Song with AI
Select the exact part you want to change—by lyrics or waveform timeline. Edit the lyrics, describe the mood, and regenerate only that section. Your original track stays intact. Get two variations per edit to choose the version you prefer.
What is Replace Section of a Song?
Replace Section is an AI music editing tool that regenerates a specific part of your song while keeping the rest unchanged.
Replace Section Use Cases
From fixing a single word to reworking an entire bridge, these are the main ways creators use AI to replace sections of their songs.
Lyric Revisions
Songwriters use Replace Section to fix a line that doesn't rhyme, swap a word that sounds awkward when sung, or rewrite a verse to tell a different story. Select the lyrics, type the replacement, and hear the updated version in minutes—without re-recording the entire song.
Melody and Arrangement Fixes
Producers who need a stronger chorus hook or a different bridge melody can replace that section with updated style tags. Adjust the energy, swap instruments, or shift the mood—the AI regenerates only the selected bars while preserving the transitions on both sides.
Language and Localization
Artists releasing music for international audiences use song inpainting to replace a verse or chorus with lyrics in a different language. The AI matches the vocal style of the original while singing in the new language—useful for creating bilingual tracks or regional versions.
Replace Section Features
MemoTune Replace Section gives you surgical control over which part of your song changes, with smooth transitions and multiple output options.
What Makes Our Replace Section Tool Different?
Compared to regenerating entire tracks or manual editing in a DAW, MemoTune replaces only what you want changed—faster and with less risk.
Edit Seconds, Keep the Song
Other AI tools force you to regenerate the entire track when one section needs work. MemoTune targets only the selected region—change 10 seconds in a 4-minute song without touching the other 3 minutes and 50 seconds. Your favorite parts stay exactly as they are.
No Re-Recording Required
Manual fixes mean booking studio time, hiring musicians, or re-singing vocals. Replace Section handles the edit entirely through AI. Select, describe, generate—done. No microphones, no DAW plugins, no session fees.
Seamless Audio Blending
The AI pads the selection boundary by 100-300ms on each side and applies intelligent crossfading. This eliminates the audible cut points that plague manual splicing. Listeners hear one continuous track, not a patchwork of edits.
Lyrics-First Workflow
Select directly from the synced lyric display instead of scrubbing through audio trying to find the right timestamp. See exactly which words you are replacing. This lyrics-first approach is faster and more accurate than time-only selection methods offered by other tools.
Iterative Refinement
Not happy with the first replacement? Adjust your lyrics or style tags and regenerate. Each attempt produces two new variations. Iterate as many times as needed—your credits are only consumed per generation, and failed generations are automatically refunded.
Free Credits to Start
Test Replace Section with free credits on signup. Hear how the AI handles transitions in your own music before upgrading. No credit card required. Credits cover the full workflow: upload, select, replace, and download.
How to Replace a Section of a Song?
Three steps from upload to finished edit. Most replacements generate in 1-2 minutes.
Upload Your Song
Drag your audio file (MP3, WAV, M4A, OGG, or FLAC, up to 20MB) into the editor. MemoTune analyzes the track and displays a synced lyric panel alongside the waveform timeline. Both interfaces are ready for section selection once the upload completes.
Select and Edit
Highlight the lyrics you want to change in the lyric panel, or drag a range on the waveform. Type new lyrics for that section or add style tags to adjust genre, mood, or instrumentation. Minimum selection length is 6 seconds to give the AI enough musical context for a natural replacement.
Replace and Download
Click Replace to generate two variations. Preview each version to hear how the new section connects with the surrounding audio. Pick the version you prefer and merge it into the full track. Download the final result in MP3 or WAV.
Start Replacing Song Sections Today
Upload your track, select the part that needs work, and hear the replacement in minutes. Two variations per edit. Free credits on signup—no credit card needed.
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Frequently Asked Questions
Selection, formats, quality, and limits—answers to help you decide if Replace Section fits your editing workflow.
What is the minimum section length I can replace?
The minimum selection is 6 seconds. This gives the AI enough surrounding context to analyze the musical style and generate a replacement that transitions naturally into the unchanged portions. Shorter selections would not provide enough context for coherent audio generation.
What audio formats are supported?
Upload MP3, WAV, M4A, OGG, or FLAC files up to 20MB. Output is available in MP3 for quick sharing or WAV for further editing in your DAW. The merged final track preserves the quality level of your source file.
Can I replace multiple sections in the same song?
Yes. After replacing one section, you can select another part of the same track and replace it separately. Each replacement is independent—edit the verse first, then the bridge, then fine-tune the chorus. The order does not matter.
How does the AI handle transitions between original and replaced audio?
The AI pads each selection boundary by 100-300ms and applies crossfading to blend the replacement with the surrounding original audio. It also matches key, tempo, and energy levels at the edit points. The result is a continuous track without audible seams.
Will replacing a section affect the rest of my song?
No. Only the selected region is regenerated. Audio outside your selection remains byte-for-byte identical to the original upload. Your original file is also preserved separately so you can always revert to the unedited version.
How many credits does each replacement cost?
Each replacement costs 4 credits and generates two variations for you to compare. If a generation fails due to a processing error, credits are automatically refunded to your account. Free signup credits let you test the feature before purchasing a plan.
What Our Customers Say
Real feedback from creators who fixed, revised, and improved their songs using Replace Section—without starting over.
Jordan Blake
Music ProducerHad a perfect instrumental but the second verse lyrics were weak. Replace Section let me rewrite just that verse—melody, vocals, everything—while keeping the rest untouched.
Yuki Tanaka
SongwriterI changed one chorus line that was bothering me for weeks. Two variations came back, both better than what I had. The transition was completely seamless.
Carlos Mendez
Content CreatorMy intro had an awkward vocal line. Selected it on the waveform, typed new words, and the AI sang them in the same voice. Fixed in two minutes.
Lisa Andersson
Indie ArtistI needed a bridge with completely different energy than the rest of the song. Replaced the old one with style tags for acoustic and intimate—it worked on the first try.
Jordan Blake
Music ProducerHad a perfect instrumental but the second verse lyrics were weak. Replace Section let me rewrite just that verse—melody, vocals, everything—while keeping the rest untouched.
Yuki Tanaka
SongwriterI changed one chorus line that was bothering me for weeks. Two variations came back, both better than what I had. The transition was completely seamless.
Carlos Mendez
Content CreatorMy intro had an awkward vocal line. Selected it on the waveform, typed new words, and the AI sang them in the same voice. Fixed in two minutes.
Lisa Andersson
Indie ArtistI needed a bridge with completely different energy than the rest of the song. Replaced the old one with style tags for acoustic and intimate—it worked on the first try.
Jordan Blake
Music ProducerHad a perfect instrumental but the second verse lyrics were weak. Replace Section let me rewrite just that verse—melody, vocals, everything—while keeping the rest untouched.
Yuki Tanaka
SongwriterI changed one chorus line that was bothering me for weeks. Two variations came back, both better than what I had. The transition was completely seamless.
Carlos Mendez
Content CreatorMy intro had an awkward vocal line. Selected it on the waveform, typed new words, and the AI sang them in the same voice. Fixed in two minutes.
Lisa Andersson
Indie ArtistI needed a bridge with completely different energy than the rest of the song. Replaced the old one with style tags for acoustic and intimate—it worked on the first try.
Jordan Blake
Music ProducerHad a perfect instrumental but the second verse lyrics were weak. Replace Section let me rewrite just that verse—melody, vocals, everything—while keeping the rest untouched.
Yuki Tanaka
SongwriterI changed one chorus line that was bothering me for weeks. Two variations came back, both better than what I had. The transition was completely seamless.
Carlos Mendez
Content CreatorMy intro had an awkward vocal line. Selected it on the waveform, typed new words, and the AI sang them in the same voice. Fixed in two minutes.
Lisa Andersson
Indie ArtistI needed a bridge with completely different energy than the rest of the song. Replaced the old one with style tags for acoustic and intimate—it worked on the first try.