Sometimes, a song tells a story. Other times - and this, in all honesty, is a trickier feat to pull off - a whole album tells a story. The humble, oft attempted but rarely well executed, concept album.
Whether it holds a consistent theme, character or narrative throughout the entire tracklisting, the concept album can be one of the most exciting and rewarding albums to listen to. From The Who's classic Tommy to Sufjan Stevens' Illinois, we've picked out the ones with the most facinating story behind them.
These are 10 of the most interesting concept albums of all time.