This is LINK WEEK, so until Saturday, every day will see me adding another link. Today’s link is DESIGNATED HITS. The page is based on a single question: What is a player’s walk-up (or, in the case of pitchers, entrance) song? Designated Hits lists that, team by team, while also allowing you to search to see who likes artists (say, Jay-Z) or even individual songs (“Radioactive” was quite popular last year, for example).
Parts of it could use some updating, but it’s still up-to-date enough to be included.