Add custom music in my kahoots

I would like it to default to the “Kahoot” music, but I would also like it if you could insert in your own to replace it. For instance, on a Christmas one, put in a few Christmas songs, and they play (With tune, or, with a slider, lyrics being sung, via the recording that your put in with link), and, the quizer can, before starting, flip a switch, if there is custom (If not, it isn’t visible), which is either “Classic” (The “Kahoot” music), or custom, which are the song(s) that you put in. If you are confused by this, just say so, and I’ll try to improve this. I made this quite quickly.