Compare any cover with its original on YouTube — with a proper audio balance slider, 0.1-second offset, and A-B loop.
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Open DualTube→Flipping between two tabs means you forget the texture of the first version before the second one loads. DualTube keeps both in front of you, synchronized — you can switch which one you are hearing in real time without losing the phrasing.
Slide left to hear only the original. Slide right for only the cover. Center for both at 50/50. This lets you A/B the same bar without clicking anything.
Covers rarely start on the same beat as the original — intros, anacrusis, key changes. Use the offset slider to nudge one video until the downbeat lines up. Once it does, the whole chorus is A/B-ready.
Once synced, mark A at the start of the chorus and B at the end. DualTube will loop both videos through the same 12 bars indefinitely so you can study tone, arrangement, and vocal phrasing.
Copy the official audio or music video URL, paste into the left input.
Find the cover on YouTube (e.g., acoustic, jazz, live) and paste it into the right input.
Scrub to the first beat of the chorus on both and adjust offset in 0.1s steps until they match.
Mark A at chorus start and B at chorus end to repeat that section.
Slide L/R to hear either side alone, or center for both.
No. DualTube does not modify audio — it plays the original YouTube stream. For pitch matching, use a DAW or a dedicated key-shifter.
Two at a time. Save each comparison and open multiple browser tabs for more.
Yes. DualTube embeds YouTube via the official IFrame API. Ads and creator revenue work normally.
Use DualTube to compare music covers with their original songs. Listen side by side with audio balance control.
YouTube A-B Loop on Two Videos: Compare Musical Sections PreciselyPractice a guitar solo or compare two cover arrangements by looping the same 8 bars on both videos simultaneously. DualTube is the only free tool that offers A-B loop across two synced YouTube videos.