Skoumal, Petr : ...se nezblazni ( ...don't get mad ) , Panton 1989, as guest, vocal

C&K Vocal : Nemilovany svet ( Unloved World ) , Panton 1991, vocal

Skoumal, Petr : Hotelovy pokoje ( Hotel Rooms ) , Bonton 1994, as guest, vocal

C&K Vocal : Shakespeare-Sonety , Frantisek Rychtarik, B&M Music 1997, vocal

C&K Vocal : Usi ( Ears ) , Indies Records 1999, background vocal