I have 3 playlists that hold many songs.
1 - Named "stuff I listen to", holds many songs I like
2 - Named "lock in playlist", consists of many of my favorite songs from the 1st playlist. Some songs I really like go to the 2nd playlist right off the bat.
3 - Named "hall of fame", only the best songs from the 2nd playlist are added, one to two added each month.