We always receive emails about the difference between the Single, EP or Album release status. Here is a short user guide about these three release type:

A release must be identified as a Single if:
•  It contains one to three tracks that are less than 10 minutes each.
•  If your release meets the criteria for a single, “Single” will be added in the release title.
•  One-track singles must have 
matching album and track titles.

A release must be identified as an EP if:
•  If it has one to three tracks with one track at least 10 minutes long and a total running time of 30 minutes or less
•  Four to six tracks with a total running time of 30 minutes or less.

A release must be identified as an Album if:
•  If it has more than six tracks and a total running time of 30 minutes or more.