If you happen to speak Norwegian, 36:44-ish into this:

https://www.lvup.no/artikler/level-backup-471-elden-ring-shadow-of-the-erdtree-zelda-metroid-prime-4-still-wakes-the-deep/2416

(Norwegian game journalist) Frida is excited about our game, which made us super-excited, so in a burst of inspired excitement I did some amazing progress on the Karaoke system in the game. The lyrics of the songs will indeed adapt to choices you have made in the game.

And also, to Frida's more skeptical colleague, a part of the "karaoke-mode" is also that you can just do regular voice-acting on spoken dialogue :D You aren't forced to sing if you dont wan't to <3
But if you do want to, we are putting a lot of thought into how the songs are presented. So the first song is just spoken in rythm, the second song is "call and response" (so you "mimick" what the narrator just sang), and there's always instruments playing the melody etc etc, so it will be a very "safe" experience to sing along to this.