For example, Linde's compositions "Neuzeitliche Übungsstücke" are standard pieces for modern recorder.
I'll have to play one out of that for my entrance exam.
Also the composition music for a bird for example is important.
The notation and technique is completely new and so it's a new way of playing and performing.
There are pieces where one artist has to play two recorders at the same time. Not as easy as it seems to be!
"Music for a Bird" - Hans Martin Linde - YouTube