I have not used Choruzz in my classroom yet, but I can see the possibilities. This site allows you to create your own playlist of songs. There is no sign-in or registration required. Once you create a list, and “publish” it, you are given an embed code and a unique URL, so that anyone you would like to share it with can access it. You can check out a practice playlist I created at this link.
Last school year, one of my more successful lessons included a center where students could listen to a playlist on my iPod, and choose the song that they would pick as a theme for the novel we had just read. They really enjoyed it, and there was much discussion within each group about the pros and cons of the songs. Their written explanations were very thorough. I could see using Choruzz for this activity, so that more students could access the playlist – or even do the activity at home.
My cautions would be that the videos for the songs are included, and that there are some ads that run at the bottom. I have not seen anything inappropriate in my short experimentation with this, but will be exploring it further before I offer it as an option for my students. Another possible obstacle would be that district filters might block the site.
Choruzz has a lot of potential for classroom use. If this particular site cannot be used educationally, I would love to see a similar one that could be used in a classroom setting.