Music in Cathe Videos
When we film Cathe usually has music playing in the background so she and the crew can stay on beat. There are exceptions to this for workouts like STS which don't follow a beat. In cases like this the workouts are filmed without music and then the music is added in during editing.
Cathe's voice is recorded through the microphone she wears onto a separate audio track. The mike Cathe wears only picks up sound within a few inches of her mouth, so the background music is not picked up by her mike. Instead, music is recorded on a separate track directly from the source which is just a high end cd player.
The vocal and music tracks are then mixed together with the video for the normal play mode. Since these are all perfectly synced when they are recorded the vocals, music and video will match perfectly.
For vocals only option we just play the unmixed vocals only track instead of the mixed tracks.