AS USUAL with the Contemporary Music Network these days, presentation was paramount in Monday night's much-hyped "visualised concert", entitled From the Grammar of Dreams. During this 70-minute sequence of 10 pieces by the Finnish composer Kaija Saariaho, four of the five almost identically yellow-trouser-suited female performers - the (not quite identical) twin-sister sopranos, Anu and Piia Komsi, the latter of whom also plays cello, and a trio of flute, viola and harp - came and went on the main platform; their movements were covered by tape interludes of what sounded like birdsong, occasion...