On the train today I spun:
David Tudor's
Neural Synthesis no.6, very disconcerting to listen to on headphones because it's recorded binaurally - some of the electronic sounds seemed to be coming from inside the head of my neighbour. But confirmation that (referring back to another thread) I find his music very beautiful and original.
Neural Synthesis by the way is more a technical setup than a "piece" - there are four recordings of it on the double CD, two of which are binaural, and I once also saw him play it live (one of the most memorable concerts of my life, indeed) which was different again. The setup consisted of numbers of small homemade-looking boxes connected by a spaghetti of cables, looking more like the remains of an explosion in an electronic-components shop than anything else...

... which Tudor would adjust every now and again. It was difficult indeed to hear the connection between what he was doing physically and the sounds that issued from the loudspeakers, but it held my fascination for a whole evening.
AND
Zelenka's oratorio "Sub olea pacis...", a ceremonial rather than dramatic kind of piece but containing some beautiful arias with constantly-varying instrumentation - one with two flutes
and two recorders, plus some X-rated chalumeau action. Unfortunately the only complete recording

is bordering on inadequate in the vocal department. The tenor in particular isn't at all equal to the passagework. But it's all worth hearing anyway, and when a better recording comes along I'll be first in the queue.