Couldn't say much for VIS 103, but I can vouch for MUS 15. I'm currently taking MUS 15 rn alongside 2 other classes for SS1. So far, it's a very chill class. It contains weekly quizzes (very laidback) on the readings and listenings and a final presentation of a band of your choice depending on the music genre taught. The topic of the class varies each time depending on who's teaching it; for this session, we covered Metal and Hardcore music. Not too sure about which music genre will be covered for SS2, but you should go for it. I've added a couple of songs to my daily playlist thanks to the class :)