Hi!

So I have a playlist which i keep adding new music to almost every day, and i listen to it all the time. It says that it contains 361 songs, but I know that that's wrong bc it's been saying that for nearly a month now. At first I thought that it was just something wrong with the number of songs, but then i checked the list and noticed that the oldest songs on the playlist are gone?? So whenever I add a new song to the list, the oldest one somehow dissapear. Why does this happen? I know I have enough storage and stuff, so I just don't understand. It really sucks loosing songs from the playlist, bc you get some kind of attachment to every song and stuff.. 

Please help me somehow bc I'm lost haha 😞