See when you last played each song
Each song in your library now says when you last opened it in the player, so the ones you've been neglecting are easy to spot.
Every card in your library now has a line under the title saying when you last opened that song in the player: "Opened 5 minutes ago", "Opened yesterday", "Opened 4 days ago", or the date once it's been more than a week. Hover over it to see the exact day and time.
Only opening a song in the player counts. Looking at its details page or downloading the file doesn't.
Songs you haven't opened since this update show the day you added them instead, until the next time you play them.