I like the concept of the "Radio" playlist, but can we pick the artists?

[Kato_1]

I enjoy listening to the "Radio" playlist, however, I don't like all the artists included in the "Radio" playlist. Could there be a option similar to select a number of artist/bands and all their songs automatically creates a playlist.

For example, if I feel like listening to only Pink, Maroon 5, and Cold Play ... I can select them and all their songs will automatically create a playlist, without having to go through all their albums and adding to a playlist. If I don't fell like listening to one of them and want to listen to a different artist, I can unselect the artist/band and select another. For example, I want to swap Maroon 5 with Six60 ... so I would unselect Maroon 5, select Six60, and now would have Pink, Cold Play, and Six60 songs in a playlist. 

I hope this makes sense.