A historical Kairisa concert performance space was created by the three-dimensional concept of the choir soloists working on steps - mainly on the proscenium, coming and going on the stairs.
Viestura Kairiša veidotajā koncertuzveduma telpiskajā koncepcijā koris darbojās uz pakāpieniem, solisti - galvenokārt proscēnijā, retu reizi uznākot vai aizejot pa kāpnēm.