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"Paroles de Jeunes" CD-Compilation. Tracks "The K feat. Def-Cut: From the days" and "S'Projäkt: Diräkt mit Dialäkt".

"AC-Click" Mix-Tape from DJ A.L.K. und DJ Crack.

Underclassmen "Weak Ideas" vinyl single on Indivisible Records.

"Universal DJ-Invasion" Album feat. KO-System ( DJ A.L.K., DJ ACE and DJ Chrome) on M-Pire Records Germany.

"The Professionals" Mix-Tape feat. KO-System ( DJ A.L.K., DJ ACE and DJ Chrome).

"Dankbar" Track on the "Black Tiger & Rony" Album "Zwei in Aim" produced by Phil-Pro on Nation Records.

Vasi "diräggt us em Milieu" Compilation with the tracks "Hard Headed" featuring Kaotic, "Valued Products" featuring Trig and "Im Griff?" produced by Phil Pro on Milieu Records.

Underclassmen "365 Live" Vinyl and CD single on Milieu Records.

Red Gee "3 x 20" single featuring UnderClassMen on Milieu Records.

Boarder Noize Vol.1 with "Crowd" by the UnderClassMen on Element Records Germany.

DJ NEXT (USA) Mix-Tape/CD " Live at the Barbeque" Track "My Hip-Hop" feat. UnderClassMen & Promoe (Looptroop,SE).

Fat Daddy "The Chocolate Lover EP" featuring the UnderClassMen on the track "This is Hip-Hop".

Kalmoo "Keine e Froog?" Album feat. Kaotic Concrte(UCM) on the Track "Nash Cakes" on Milieu Records.

Sunanda “Leave it Behind” CD-Single on Milieu Records. Title Track featuring Kaotic Concrete, produced by Phil Pro.

"Ethos” (2LP/CD) Album with Track “Make Way” featuring K-otix (Houston, USA) and Donte of Mood (USA) on Grooveattack (Germany).

Kaotic Concrete “Time To Build” Vinyl and CD single on Milieu Records.

Xanthipus "Beat Striit" Album featuring the UnderClassMen on the Track "Damage".

DJ Tray “Underground Activity” Mixed-CD featuring UnderClassMen.

DJ Ace "Jetzt ich" Album featuring the Phil Pro produced Tracks "S'Vermächtnis" and "Züri" on Muve.

Zitral & Mars "Ai Daag in Basel" Album featuring the UnderClassMen Track "Train to Basel" on WB-Tal Records.

Conflict Musical feat. Kaotic Concrete

Black Tiger “Tout autour de moi” feat. Kaotic Concrete on Nation Music.

Jay-Roc feat Kaotic Concrete.

UnderClassMen “UnderClassic” Full-Length Album on MUVE Recordings, Switzerland.

Loptimist feat. UnderClassMen: Tracks “Hard Hitting” and “Illest Form” on Tyle Music, South Korea.