A ready ZIP has at least one vocal-looking file and at least one backing file such as instrumental, music, bass, drums, or other.

What if I only have one MP3?

Export vocal and instrumental stems first. One mixed MP3 is usually not a clean karaoke input.

Free stem ZIP check

Check your Suno stem ZIP before upload.

Q: Does this upload my files?

No. The checker only looks at filenames you paste into the page. Upload happens later in the Song Karaoke form.

Paste the filenames from your ZIP. The checker tells you whether Song Karaoke can see a vocal stem plus backing stems before you spend time uploading.

Check filenames Only have one MP3? Run no-upload MP4 sample

Paste the filenames inside your ZIP.

This checker stays in the browser. It sends only the result category and counts for analytics, not your filenames.

Filenames

Why this catches the common blocker.

One final MP3 is not enough

Song Karaoke needs the singer and the backing track separated so it can make guide-vocal mixes and sync the words cleanly. Fix the MP3 problem.

Udio-style ZIPs can work

Vocals plus bass, drums, other, or backing stems are accepted. Song Karaoke combines the non-vocal parts into one instrumental.

Preview before checkout

After upload, render the first 15 seconds privately. Checkout starts only when you unlock the full MP4.

Fast answers.

Does this upload my files?No. This page checks pasted filenames only. Upload happens later in the render form.

What should I rename?Use obvious names such as vocals.wav and instrumental.wav before compressing the ZIP.

Can I still use the full guide?Yes. The Suno stems guide explains where to export stems and how to prepare the ZIP.

Ready after the check?

Upload the ZIP, paste lyrics, generate the free preview, then choose YouTube Video, Shorts Video, or Both Formats only if the timing looks right.

Upload stem ZIP