For roughly the next hour of the play's intermissionless 100 minutes, this sense of song weaving awkwardly through the prosaic, repetitive business of a party that changes little from year to year is wonderfully sustained, and it is a compliment to say that you are rarely aware of the period scenery (David Jenkins), costumes (Jane Greenwood) or the subtly shifting lighting (Jennifer Tipton). - http://theater2.nytimes.com/mem/theater/treview.html?res=9C03E2D71138F93AA15753C1A96F958260
Source: wiktionary