Topic summary
ALBUMS

Extracted from the Wikipedia article Album.
Length
An album may contain any number of tracks. In the United States, The Recording Academy's rules for Grammy Awards state that an album must comprise a minimum total playing time of 15 minutes with at least five distinct tracks or a minimum total playing time of 30 minutes with no minimum track requirement. In the United Kingdom, the criteria for the UK Albums Chart is that a recording counts as an "album" if it either has more than four tracks or lasts more than 25 minutes. Sometimes shorter albums are referred to as mini-albums or EPs. Albums such as Tubular Bells, Amarok, and Hergest Ridge by Mike Oldfield, and Yes's Close to the Edge, include fewer than four tracks, but still surpass the 25-minute mark. The album Dopesmoker by Sleep contains only a single track, but the composition is over 63 minutes long. There are no formal rules against artists such as Pinhead Gunpowder referring to their own releases under thirty minutes as "albums".