Concept album

A concept album is a kind of album in which all the songs are about the same thing. Most of the time, they tell a story.

Examples
Examples of concept albums are:
 Lemonade by Beyoncé
 American Idiot by Green Day
 All of Coheed and Cambria's studio albums
 Thick as a Brick by Jethro Tull
 Most of Pink Floyd's albums
 Clockwork Angels by Rush
 The Black Parade by My Chemical Romance

References