Software Music player as virtual input device

I need an application (on Windows first but later on Mac too) which can be used to take a playlist of music, take the input of a microphone and then present this as an output so I can use this as my microphone in zoom.

The reason for this is that we offer free yoga to Africa, we have volunteers who deliver the yoga to our communities however if we play the music and speak as the yoga teacher the music is not clear.

We a work around which is to use the screenshare on Zoom and share the audio however by doing this the people in Africa watching on tablets can’t see all participants as the screen is in place of the teacher.

Examples of software which do similar:
loopback: https://rogueamoeba.com/loopback/
BlackHole: https://github.com/ExistentialAudio/BlackHole