One album shows up as five: why players split albums and how to make them one again

You rip an album, or buy one, and your player shows it as five albums. Same name, same cover, with tracks 1, 4 and 9 in one copy and the rest scattered across the others. Sometimes it's subtler: one album, listed twice. I've had it on my soundtrack folder more than once, and it was always the same sort of thing. The tags looked identical to me. They weren't identical to the computer.

Players group by exact text

A player doesn't know what an album is. It reads the Album field from every file, puts files with exactly the same text into one pile, and calls each pile an album. Most players also check Album Artist. Some add the year, genre or disc number. Every field in that grouping key has to match on every track. One character out and you get a second pile.

Exactly the same is stricter than it sounds. Abbey Road and Abbey Road with a space on the end are two albums. So are Abbey Road and abbey road in plenty of players. A few ignore case; don't count on it. Car stereos are the least forgiving of the lot.

So the job is to find the field that differs and make it the same everywhere. Six places to look, roughly in the order they turn out to be guilty.

Six things that split an album

The album name differs by a character

This is the usual one. Half the tracks say Abbey Road (Remastered) and half say Abbey Road. Or the tracks agree apart from a trailing space you can't see. Or three tracks use a curly apostrophe (’) in Sgt. Pepper’s and the rest use a straight one ('). They look the same in most fonts. They aren't the same character.

To spot it, compare the Album field on a track from each "album", character by character. To fix it, choose one spelling, copy it, and paste it into every track. Don't retype it. Retyping is how the trailing space got in there to begin with.

Artist changes per track and Album Artist is empty

Compilations and albums with guest spots do this. Track 3 is by Artist, track 4 by Artist feat. Someone, track 5 by someone else. With Album Artist empty, the player falls back to grouping by Artist, and you get one album per artist name. (Windows labels the two fields "Contributing artists" and "Album artist".)

The proper fix is to set Album Artist to one value on every track and leave Artist as the per-track credit. For a compilation that value is Various Artists. For a normal album it's the band. Tag fields explained covers what Album Artist is for.

Year or genre differs

Some players include the year in the grouping key, a few the genre. A rip where tracks 1 to 6 say 1969 and tracks 7 to 12 say 2009, because a different tool filled in the remaster year, gets split down the middle. Genre does the same when half the album is "Rock" and the other half "Classic Rock". Pick one year and one genre and put them on every track.

Disc numbers on some tracks and not others

Single-disc albums often arrive with a disc number of 1/1 on a few tracks and nothing on the rest, or 1 on some and 1/2 on others. To a player that cares about discs, the blank ones belong to a different disc, and sometimes a different album. Either give every track the same disc number or clear it on every track. Blank everywhere is fine for a one-disc album.

A track still carries an old ID3v1 tag

An MP3 can carry two tags at once: a modern ID3v2 tag at the front of the file and an old ID3v1 tag at the end. ID3v1 fields stop at 30 characters, so Original Motion Picture Soundtrack becomes Original Motion Picture Soundt. If a couple of tracks only have the old tag, or your player reads it first, they land in a second album with a chopped-off name. Long soundtrack titles are especially prone to it, which is how I learned. The fix is to write a proper ID3v2.3 tag to every file. What's inside an MP3 tag explains the two-tag business.

The tags are fine and the player hasn't noticed

If you've fixed everything and the album is still in pieces, the player is showing you its own database, not your files. Apple Music, Windows Media Player, Plex and Jellyfin keep a library index and don't always re-read a file when a tag changes. Remove the album from the library and add it again, or run a rescan. On a phone or in a car, copy the fixed files over again.

Symptom, cause, fix

How I find the odd one out

The quickest way I know is the editor at editmp3tags.com. It shows exactly what's in each file's tag, not what a player has decided to display. Drop in a track from the first "album" and note the Album field, then a track from the second, and compare the two character by character. Click at the end of the Album text and watch where the cursor lands; a gap between the last letter and the cursor is your trailing space. Check the apostrophe, and the hyphen, which might be a dash. Trailing spaces and lookalike punctuation are invisible in a player's album view and obvious in a text box.

Do the same for Artist and Year while you're there. It takes about a minute, and most of the time the culprit is a space in the Album field.

Make them identical

Once you've found the difference, fix every field, not just the guilty one. My list:

• Same Album text on every track, pasted from one source, not typed.
• Same Album Artist on every track, or failing that, the same Artist.
• Same Year on every track.
• Track numbers as n/total, so 3/12 rather than 3.
• One cover image, the same file, on every track (see album art not showing if that's the problem).
• An ID3v2.3 tag on every file, with any leftover ID3v1 tag removed or rewritten to match.

Then make the player look again. That trailing space caught me twice on the same soundtrack folder. The second time I copied the album name out of track 1 and pasted it into the other eleven, and it has been one album ever since.