Thank you @PedroFVas but I feel sorry for whom doesn't have the pc available and wants to add The Beattles to his/her radio by adding each single song using the mobile. This doesn't sound very smart to me.
I do understand what you're saying but I'm not the one who makes the rules. I think you can also follow the artist if you want or if you really want to add all their music to one single playlist I guess you can album by album, clicking on thee ellipsis bottun and then click "Add to play List". @caputo
This item is incorrectly tagged as solved. The 'solution is that the product does not support this feature. That is not a solution and the status should reflect that. It should be put forward as a enhancement request by Spotify.