Joining computer audio distorts sound

Hi all,

Today when I started a fitness class and joined computer audio the music became distorted. I had the singer's voice but none of the actual music. If I left computer audio it was fine. I checked starting a different class, I tried all of the optional settings in the audio options, I checked my computer settings. I also updated devices, Zoom, my computer, I uninstalled Zoom twice, and rebooted my computer a couple of times. I used different speakers and different audio cables. I don't know what else to do. I'm not certain when this happened because I was out all last week. I need the hive mind to work for me, please!