torn crane
Hi! I think your layout and overall design structure here is fairly solid - using consistent 4px multiples for spacing helps.
A few points:
In general, I would avoid using dummy or duplicate content - especially if you're planning to put this in your portfolio or present it in an interview. Seeing multiple elements with "Song name" and "artist name" and duplicates of the same cover art per section... it's visually tiring and comes across as lazy (I know this is not your intention, obviously.)
Use actual song names and cover art from Maroon 5 with different play counts. Use real playlist images and artist names and song titles. It's always better to make your designs feel believable and not like a mock-up 🙂
2:
On the player view, the white background of the seekbar has too little contrast with the blue "selected/active" portion (they stand out equally). I would try a darker shade for the white portion to make sure the active player bar stands out more.
Also, there's something about the "Now Playing" and "Pop Playlist" text styles matching on the player that feels off. You could try using an all caps treatment for one of them to make the hierarchy of elements here more distinct.