My favorite bands/singers are ______
Lately I’ve been into ______
The last album I listened to was ______
Or even just look at the history on whatever streaming app you use.
The point of someone asking “what kind of music do you like?” is to get to know you better. Saying “everything” not only defeats the purpose of the question, it also halts the flow of the conversation. If you aren’t sure what you like, you can say something like
“I’ve been looking for new music, have you heard anything good lately?”