Markyz John : Rozkaz generale ( On Your Command, General ) , Happy Music 1997, keyboards, vocal

Pumpa : Tak trada , Popron Music 1999, as guest, keyboards

ABBand : Deratizer , Popron 2009, keyboards, samples

Petr, Oskar : Jsme stary jako deti ( We're As Old As Children ) , Galen 2013, as guest, keyboards

Brichta, Ales : Udoli svini ( Swine Valley ) , T-Production 2013, as guest, samples