What Japanese bands and singers as well as albums and songs do you recommend that a beginner learning the language will easily understand (specifically a level 1 learner)?

Been steadily learning Japanese enough that now I can read some articles and understand advertisement on Youtube on the spot. But I require 100% focus in other to quickly get whats being said as its being spoken out at a rate almost as quickly as I hear it.

So as someone into music I ask what are some great bands, songs, singers, and other music artists you would recommend for someone who has gained about the same level of proficiency as I am at right now? I ask if possible not to include stuff aimed at little kids (though I’m OK with traditional rhymes and so on taught at school).

Also please as much as possible I’d rather avoid artists and bands that are associated with anime music. Its pretty tiring getting exposed only to otaku stuff on Youtube when you search for music.

by CamelIllustrations