Savasana: For the practicum, can I leave music on throughout the silent part of Savasana? Or is that not considered silent?

It is fine to have music playing during Savasana, for your practicum, and when teaching in the real world. 

Consider choosing music that does not contain lyrics and does not have a consistent beat, as these types of music may be distracting or could influence a person's rest state. 

Instead consider music that is more ambient, as this might help to create a bliss like state, and may help to dissolve external noise or distraction. This is especially worth noting if you are teaching in a busy or noisy environment such as a big city or in a community centre, where there might be lots of other activities going on in other rooms at the same time as your class. 

Ambient music can sometimes help to create the similar effect to white noise and may help your students to drop into that state of peace and calm, that may not be possible without the use of music. That being said, it is a personal choice and music may not work for every teacher or student, so you may prefer to have complete silence for Savasana. This is something to explore as a teacher and with your students.

If you do choose to use music during Savasana, be mindful of the volume of the music, and that it is accompanying and supporting the students' experience in Savasana, and not taking away from it.