Ena, I think it would be more germane to the discussion and to the spirit of CD's question if you named a contemporary work which has baffled you upon hearing it, instead of an 18th century work whose notation is ambiguous.
Thanks Richard - and sorry CD! We were at cross purposes I think - I missed your point somewhat didn't I? (Forget the Bach - it can be taken up on another thread if people want to).
I personally have no difficulty with Contemporary Music (as I hope you might have inferred - even though I launched into some of the loose ends thrown up by arguments going on here). So it would not really be very productive to isolate an individual example. I suspect in any case that whatever difficulty you have with the Schubert piece is likely to be one in which it is difficult to relate it to its historical/aesthetic context in some way (as mine is with the Bach example).
With Contemporary Music the situation is different, since everything one hears seems (for obvious reason) to have been in some way "new" or "original" (and, as you have said, something of a novel learning experience for its composer).
I went to a bmic Cutting Edge concert some time ago - in 2004 (later broadcast on R3). The programme was this:
Ian Willcock
'Book of Maps' (13'52")
asamisimasa
Michael Finnissy
'Greatest hits of all time' (13'49")
Ensemble Exposé
Roger Redgate (conductor)
Christopher Redgate (oboe)
Ross Lorraine
'within what changelessness' (18'16")
World Premiere
Ensemble Exposé
Roger Redgate (conductor)
Soloists: Sarah Leonard (soprano), Christopher Redgate (oboe), Caroline Balding (violin)
Joanna Bailie
'Waning' (7'30")
UK Premiere
Ensemble Exposé
Roger Redgate (conductor)
James Saunders
'081104' (9'15")
World Premiere
asamisimasa
James Dillon
'Vernal Showers' (14'54")
1. Philomena's Song
2. Shifting Elements
Ensemble Exposé
Roger Redgate (conductor)
Caroline Balding (violin)
Michael Finnissy
'L'Herbe' (13'00")
UK Premiere
asamisimasa
All I would say is this: 2hours of "New Complexity" was - for me anyway - just too long. But I was out of tune with the rest of the audience, most of whom were visibly getting more from the experience than I was. After a time (and having studied such scores) I became distracted by trying in my mind to explain why the composers should have spent so much time putting together such complex scores, only for the performed results continually to offer sounds that seemed (obviously through compositional intention) quite random. Was it simply the composer's wish a) to remain in absolute control over the players, and/or b) for the players to be enslaved by the notational complexities? It seemed throughout that the musical intention was to evince a sense of "controlled randomness" (which, to add to my distraction, I found difficult to understand, since - unlike some earlier examples of "controlled aleatoricism" I had heard - these seemed almost apologetic in some way). But there was no doubt in my mind that what I heard was what the composers had intended, especially since the quality of the performance and ensemble was so high.
So, I seldom, if ever, find myself being surprised by the unexpected - because I fully expect it! At the same time, however, I sometimes wonder whether the composers have spent a little too much effort in putting together pieces that in the event make only a slight impact. I am sometimes worried that some Contemporary Music is, if anything, a little
too easy to listen to - perhaps presenting to the listener only a marginal challenge (compared with, say, the music of Beethoven or other earlier giants). This worries me a little.