- Album titles can include unusual symbols, punctuation, or characters like ★, (), or <|°_°|>.
- Some albums have multiple cover variations, e.g., The Police's Synchronicity with 36 covers.
- Confusing or problematic album covers exist, such as Scorpion's Virgin Killer or Amanda Palmer's naked cover.
- Artists may reuse the same album name multiple times, like Weezer's self-titled albums.
- Track titles can be absent, extremely long, or consist of silence, as seen in Aphex Twin and Nine Inch Nails releases.
- Artist names may vary by region or change over time, e.g., Ghost B.C. in the USA or GZR's different spellings.
- Multiple artists can share the same name, causing confusion, such as the many bands called Emperor.
- Internationalization challenges include non-UTF8 characters, made-up languages, and emoji titles.
- Licensing issues can lead to re-recorded albums, like MF DOOM's MM..FOOD.
- Albums may have different versions across regions with varying tracklists and titles.