Record your singer and musician using a professional microphone from class.
Make sure you record with a good background (example below) that is not too distracting and show the mic they are using. A solid color background is fine too.
Video record them singing with your phone or camera (you can film, a friend, or they can film themselves) in high quality (do not use the front camera of a phone, use the rear high quality). Don't film with your Macbook, which is low quality.
Have their shoulders face the camera but they can look at the instrument and not the camera (video example)
Recommended that the musician should wear something more formal with a collar (school uniform is okay).
Use a medium shot (waist up) or a medium closeup (shoulders up) with either a low or eye angle although you may need to use a wide shot if it is a larger instrument.
Take a screenshot from the video of them playing and upload your screenshot to Schoology.