The Don't Wake Me Up singer has completed work on his sixth album and claims it is his deepest work to date.
He told Rolling Stone magazine: "This album has a lot of substance, from the subject matter and the situations to how it deals with love. It's really derived from personal experiences. Then again, I always like mixing reality with art."
The singer - who has controversially reconciled with Rihanna, whom he was convicted of assaulting in 2009 - also said the one letter title holds significance for him.
He told USA Today newspaper: "X is about life, it's about me. X is the 24th letter of the alphabet, and I'll be 24 when it comes out. When you see X on a vial, it's like forbidden fruit. For me, it means being able to express myself without a filter, without boundaries."
'The Quincy Jones approach'
The five previewed tracks are titled Add Me In, Autumn Leaves, Lady in Glass Dress, X and the first single, Fine China.
Producers on the album include Diplo and Timbaland, and Chris says he wanted to get away from the electronic, dance-music influenced sound of his fourth record, 2011's F.A.M.E.
He explained: "I tried to stay away from the Euro beats, and not go totally pop. Instead, I wanted to take the Quincy Jones approach. The record pays homage to the Stevie Wonders, the Michael Jacksons, the Sam Cookes: I wanted to put that classic essence of R&B and soul with the new age of music now.
"There's a lot of live instruments, and a lot less Auto-Tune. I really wanted to demonstrate my vocal ability, creating the vibe of me singing along with a band."
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