Recording using guitar backing track

Just wondering if anyone can help me with this. When I open an existing guitar backing track that I have on my laptop, that is essentially my first track. I then open a second track to record a vocal. My issue is that the original backing track records to the vocal track that I’m cutting as well, rather than just having the isolated vocal track that I can edit or whatever. Any help would be appreciated . Cheers

That happens when you record Stereo-Mix instead of your voice. Stereo-Mix is “everything on the computer.”

Audacity > Edit > Preferences > Devices > Recording. Pick your soundcard or microphone, not Stereo-Mix or What-U-Hear.

Audacity > Edit > Preferences > Recording: [X] Overdubbing, [_] Playthrough (de-select)


Thanks for that