Solea
New to Old
Markus Horn · Piano
Lars Hansen · Bass
Heinz Lichius · Drums
Lars Hansen · Bass
Heinz Lichius · Drums
Laika Records, 2015 
Solea
Land's End
Markus Horn · Piano
Lars Hansen · Bass
Dieter Schmigelok · Drums
Lars Hansen · Bass
Dieter Schmigelok · Drums
CordAria, 1999
The M-Project
Movin' On
Bernard Fichtner · Gitarre
Markus Horn · Klavier
Giorgi Kiknadze · Bass
Heinz Lichius · Schlagzeug
Markus Horn · Klavier
Giorgi Kiknadze · Bass
Heinz Lichius · Schlagzeug
Articulation Records, 2022 
The Fire Orange Project
Offshore Horizons
Konstantin Septinus · Drums
Florian Pöschko · Guitars
Markus Horn · Klavier
Mario Ehrenberg-Kempf · Bass
Florian Pöschko · Guitars
Markus Horn · Klavier
Mario Ehrenberg-Kempf · Bass
r3w Records, 2017
The Fire Orange Project
Echo Sounder
Konstantin Septinus · Drums
Florian Kemper · Guitars
Markus Horn · Klavier
Mario Ehrenberg-Kempf · Bass
Stephan Emig · Percussion
Florian Kemper · Guitars
Markus Horn · Klavier
Mario Ehrenberg-Kempf · Bass
Stephan Emig · Percussion
2022
Alexandra Sostmann
Bach, Byrd, Gibbons + Contemporary Music
Alexandra Sostmann · Piano
Markus Horn · Composition "Piece after Byrd"
Markus Horn · Composition "Piece after Byrd"
TyxArt, 2020
Alexandra Sostmann
Bach & Contemporary Music
Alexandra Sostmann · Piano
Markus Horn · Arrangement "G Song"
Markus Horn · Arrangement "G Song"
TyxArt, 2013
Duo Villarceaux
Tango Nuevo
Alexandra Sostmann · Piano
Judith Mosch · Piano
Markus Horn · Composition & Arrangement
Judith Mosch · Piano
Markus Horn · Composition & Arrangement
Phönix Edition, 2008
vocality
Breakout
Claudia Burghard · Vocals
Oliver Gies · Vocals
Kristofer Benn · Vocals
Markus Horn · Piano
Lars Hansen · Bass
Timo Warnecke · Drums
Oliver Gies · Vocals
Kristofer Benn · Vocals
Markus Horn · Piano
Lars Hansen · Bass
Timo Warnecke · Drums
Roxxon, 2007
Choir under Fire
One
Choir under Fire
Martin Schulte · Conductor
Markus Horn · Piano
Martin Schulte · Conductor
Markus Horn · Piano
2017
clazz
Writings on the wall
Clazz · Choir
Martin Jordan · Conductor
Markus Horn · Piano at "Don't stop the music"
Martin Jordan · Conductor
Markus Horn · Piano at "Don't stop the music"
2016
Naima
Vertigo
Christian Weidner · Sax
Christian Meyers · Trumpet
Markus Horn · Piano
Hanns Höhn · Bass
Simon Zimbardo · Drums
Christian Meyers · Trumpet
Markus Horn · Piano
Hanns Höhn · Bass
Simon Zimbardo · Drums
Mons Records, 1998
Double High C Bigband
As long as these girls are mine
Christoph van Hal · Conductor
Double High C Bigband
Markus Horn · Piano at "New York City"
Double High C Bigband
Markus Horn · Piano at "New York City"
NRW Records, 2005
Thomas Richter
Dreamscapes
Claudia Burghard · Vocals
Ralph König · Guitars
Markus Horn · Piano
Lars Hansen · Bass
Thomas Richter · Drums
Ralph König · Guitars
Markus Horn · Piano
Lars Hansen · Bass
Thomas Richter · Drums
Upper Level Records, 2003
Gunnar Hofmann
Distante
Gunnar Hofmann · Guitar
Mustafa Boztüy · Percussion
Markus Horn · Piano
Nelson Arriagada · Bass
Dieter Schmigelok · Drums
a.o.
Mustafa Boztüy · Percussion
Markus Horn · Piano
Nelson Arriagada · Bass
Dieter Schmigelok · Drums
a.o.
Idol Records Records, 2005
Iris Kramer
Children's Games
Iris Kramer · Flugelhorn
Ara Malikian · Violin
Eduardo Ortega · Violin
Laura Diaz · Viola
Juan Perez · Cello
Markus Horn · Arrangement "Sofdu unga austin min"
a.o.
Ara Malikian · Violin
Eduardo Ortega · Violin
Laura Diaz · Viola
Juan Perez · Cello
Markus Horn · Arrangement "Sofdu unga austin min"
a.o.
CordAria, 2002
Chor des Deutschen Sängerbundes
Christmas goes Jazz
Chor des Deutschen Sängerbundes
Wolfgang Diefenbach · Conductor
Markus Horn · Piano
Hanns Höhn · Bass
Simon Zimbardo · Drums
Wolfgang Diefenbach · Conductor
Markus Horn · Piano
Hanns Höhn · Bass
Simon Zimbardo · Drums
1996