Holmboe: Kairos (Sinfonias I-IV). Kairos means time in a psychological sense; that is, that passing of time which we experience - as opposed to kronos, which signifies time that can be divided into seconds and minutes. The duration of a performance, or a specific passage, is easily measured, but how the passing of time is perceived by the listener is a different matter, and it is this qualitative difference that Holmboe wished to explore. The work is unusual, not to say unique, in that it in fact consists of four individual works. The four Sinfonias for string orchestra may be performed separately but can also be combined into a single work, in which the four movements of Sinfonia IV are used to frame and separate the first three, single-movement sinfonias.