What is the difference between Single, EP and Albums?

Single

Releases that meet the requirements below will automatically have “- Single” inserted in the release title within Apple Music and iTunes Store.

• The release is one to three (1-3) tracks.
• The entire release is 30 minutes or less and all individual tracks are less than 10 minutes.

EP

On all releases that meet the requirements below, Apple will automatically insert "- EP" to the title if you do not already have "- EP" in the title of your album.

EP's must meet one of the following two requirements:

• The release has a total of one to three (1-3) tracks, one or more of the tracks is/are 10 minutes or longer and the entire release is less than 30 minutes.
• The release has a total of four to six (4-6) tracks and the entire release is less than 30 minutes.

Album
Releases that meet the requirements below will be distributed to Apple as an Album:

• The release has seven (7) or more tracks AND/OR
• The release is over 30 minutes in duration.

Compilation

Releases with 5 or more primary artists or albums that have multiple tracks released over an 18 month period will be categorized as a compilation on Apple.

Single

Releases that meet the requirements below will be distributed to Spotify as a single:

• The release has three (3) or fewer tracks.
• The release is under 30 minutes in duration.

EP

Releases that meet the requirements below will be distributed to Spotify as an EP:

• The release has four to six (4-6) tracks.
• The release is under 30 minutes in duration.

Album
Releases that meet the requirements below will be distributed to Spotify as an Album:

• The release has seven (7) or more tracks AND/OR
• The release is over 30 minutes in duration.

Various Artists 

If a release has 4 or more artists, the release will say "Various Artist" on the album level. The artists' names will be listed on the track level.