U.D.O. so objavili trailer za prihajajočo kolekcijo neizdanih in redkih skladb z naslovom Celebrator, ki bo ob njihovi 25. obletnici izšla 4. maja. Dvojni album prinaša naslednje skladbe:
CD 1:
Stormbreaker (Rev-Raptor - Japan Bonus)
Tallyman (Rev-Raptor recording session)
Run! (Remix)
Free Or Rebellion (Leatherhead CDS - Bonus)
Bleeding Heart (Dominator - Japan Bonus)
The Silencer (Dominator recording session)
Bodyworld (Infected CDS - Bonus)
Systematic Madness (Infected CDS - Bonus)
Head Over Heels (Hammerall feat. Udo Dirkschneider)
Balls To The Wall (Piano Version)
Artificialized (Mastercutor recording session)
They Only Come Out At Night (Lordi feat. Udo Dirkschneider)
Streets Of Sin (Wrong Side Of Midnight CDS - Bonus)
CD 2:
Tears Of A Clown (Classical Version)
Man A King Ruler (Mastercutor - Japan Bonus)
Hardcore Lover (Remix - 24/7 CDS)
Scream Killers (Bonus - 24/7 CDS)
Platchet Soldat (Remix feat. Faktor2)
Borderline (Thunderball - Japan Bonus)
Dancing With An Angel (Remix feat. Doro)
X-T-C (Remix - A Tribute To Accept Vol. 2)
Azrael (Remix - No Limits")
The Key (Remix - No Limits - Japan Bonus)
Metal Gods (A Tribute To Judas Priest)
Born To Be Wild (Raven feat. Udo Dirkschneider)
/B.B./
CD 1:
Stormbreaker (Rev-Raptor - Japan Bonus)
Tallyman (Rev-Raptor recording session)
Run! (Remix)
Free Or Rebellion (Leatherhead CDS - Bonus)
Bleeding Heart (Dominator - Japan Bonus)
The Silencer (Dominator recording session)
Bodyworld (Infected CDS - Bonus)
Systematic Madness (Infected CDS - Bonus)
Head Over Heels (Hammerall feat. Udo Dirkschneider)
Balls To The Wall (Piano Version)
Artificialized (Mastercutor recording session)
They Only Come Out At Night (Lordi feat. Udo Dirkschneider)
Streets Of Sin (Wrong Side Of Midnight CDS - Bonus)
CD 2:
Tears Of A Clown (Classical Version)
Man A King Ruler (Mastercutor - Japan Bonus)
Hardcore Lover (Remix - 24/7 CDS)
Scream Killers (Bonus - 24/7 CDS)
Platchet Soldat (Remix feat. Faktor2)
Borderline (Thunderball - Japan Bonus)
Dancing With An Angel (Remix feat. Doro)
X-T-C (Remix - A Tribute To Accept Vol. 2)
Azrael (Remix - No Limits")
The Key (Remix - No Limits - Japan Bonus)
Metal Gods (A Tribute To Judas Priest)
Born To Be Wild (Raven feat. Udo Dirkschneider)
/B.B./