Duet Karaoke Maker

Croonify is an AI karaoke video maker that can create duet karaoke videos from regular song files. Upload a song and lyrics, and Croonify removes vocals and synchronizes your lyrics to the original performance. For duet songs (or any song with two distinct vocal parts), Croonify can display multiple voices at the same time with independent formatting and screen layout.

This matters because “duet karaoke” is not just “lyrics on screen.” In a good duet track, the singers are visually distinct, and the lyrics timing stays readable even when both voices overlap. Croonify is built for that workflow: generate first, then use the timing editor to make the last-mile adjustments.

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How Duet Karaoke Works in Croonify

1) Start with a normal song file (not a karaoke track)

Croonify uses the recorded vocals to synchronize your lyrics. If your input file is already instrumental, Croonify has nothing to align your lyrics to. Use the original studio track, live performance, or any recording that still has the vocals.

2) Provide accurate lyrics (every time they’re sung)

Croonify attempts to synchronize every word. If a chorus happens three times, the chorus needs to appear three times in your lyrics. Remove annotations, timestamps, and ads. Keep only the words you want on screen.

3) Assign voices and choose a layout

For duet karaoke, you typically want two visible voices with separate colors (and often separate line groupings). Croonify supports multiple voices simultaneously and customizable screen layouts so the duet stays readable even when singers overlap.

4) Use the timing editor for perfection

Automatic synchronization is usually very close, but duet tracks can be tricky: harmonies, ad libs, and call-and-response patterns can confuse any algorithm. Croonify includes an easy timing editor to quickly fix the few spots that need human judgment.

Why Croonify Works Well for Duets

No subscription, no commitment

Croonify is built as a simple service: upload a file, generate a karaoke video, and you’re done. No account required.

Free access for regular use

Croonify provides regular free access. The exact limits may change over time, but the goal is that you can try it and use it without committing to a subscription.

Multiple voices at the same time

Duets often need two distinct vocal parts displayed together. Croonify supports multiple voices simultaneously with customizable screen layouts so both singers are readable.

Independent main and background vocal separation

Separating lead vocals from background vocals improves clarity and can make duet timing edits easier, especially when harmonies blur the syllables.

1080p rendering with small files

Croonify can render in 1080p while keeping file sizes small (often under 10MB for typical songs). That makes the results easy to share.

Background image/video tools

Want your duet karaoke on top of a custom background? Croonify includes tools to add a background image or video so you can match the vibe of a party, event, or performance.

Duet Karaoke Tips

Pick clean source audio when possible

Higher quality audio helps both vocal separation and timing. Heavy compression and low bitrates can make artifacts more noticeable after vocals are removed.

Expect overlaps and “shared lines”

Some duets share phrases or trade syllables quickly. If Croonify mis-assigns a line or shifts timing slightly, fix it in the timing editor. This is the normal finishing step for duet tracks.

Choral sections are harder

Big group vocals, stacked harmonies, and dense chorus sections are the hardest cases for any system. Croonify can still work well, but you may need a little more manual timing polish.

FAQ

Can Croonify make duet karaoke from any song?

It works best when there are clear vocals in the input file and the lyrics match what’s sung. For songs that don’t have a traditional “two singer” structure, you can still use multiple voices as a layout/formatting tool.

Do I need separate vocal stems?

No. You upload a normal song file. Croonify does vocal separation and synchronization automatically, and you can fine-tune timing afterward.

Is this a duet “app”?

Croonify is a web service. You upload, generate, and download your karaoke video. No subscription required.

Does Croonify store my files?

Uploaded audio is stored temporarily to support regeneration and timing edits. See Croonify’s privacy policy for details.

Related Croonify pages

If you’re searching for something more specific, these pages might help:

For an overview of everything Croonify provides, see the full Croonify tools list.