Can't find all songs of the Artist

[Wildschwein]

Hello all, I have a spotify premium account and I was wondering why i couldn't find songs by an artist in Germany (K. I. Z) when I used spotify of my other friends I could find all their songs but when I use my spotify I could only find some songs by them. How would I be able to download all their songs?

[Slim96]

I think its because spotify has to buy or rent the rights to certain songs So if they are like underground artists they might not have them all. I could be completely wrong on this but I think its kind of like Netflix. Just trying to help but I get it, they don't have some Sam lachow songs or even some of logics older stuff.