Arvö Part was born in Estonia in 1935.
He composer this piece for the 900th birthday of the cathedral in Speyer. The piece consists of :
an introduction in fast repeated chords from ff to pp
five sections named K,G,C,S,A for Kyrie, Gloria, Credo, Sanctus, Agnus
a coda similar to the introduction, but from pp to ff.
There is a kind of symmetry in this piece, as :
Agnus is the "brother" of Kyrie, but in major
Sanctus is the "brother" of Gloria, but louder and in major
Credo has two similar halves, the first in minor, the second one in major
and the end of the coda bring us back to the beginning of the introduction : the circle is shut on itself.
This design aims to symbolize the mass which, annum per annum and day after day, has been celebrated for nine centuries in the cathedral at Speyer.
This is quite a peculiar and original piece, which seem literally to "suspend" the time. Hope you will like it, but one can also hate it :-)
Near the end of the introduction, the score tells to shut down the motor to let the sound die along the last chords of the intro. I tried to apply that first, but it didn't work well : the sound was first unchanged and then died suddenly. So, no motor shut down, only a the smallest gedakt 8' alone to end the intro.