Multinote tremolos in beams?

[rpatters1]

In working through the issues around adding multi-note beams to my project, I discovered I was creating beams for them in addition to the tremolos. I imagine this is an error? It seems like maybe there should be no beams for tremolos.

But that got me to thinking about if it were possible to beam multi-note tremolos together. In principle it seems possible. (For example, beaming 4 multi-note tremolos together that each last a 16th note.) But I have never seen such a notation, even in resources like Kurt Stone and Elaine Gould. What does the MNX committee envisage?

[mscuthbert]

Oh! We didn't discuss that. Yes, that can definitely happens. Happens 3 times in the first 9 measures in the Oboe part of Ferneyhough Etudes Transcendantales alone....

Will need more thinking.

(edit: if you're engraving focus on m. 8 -- m. 5 has an error in the Oboe part -- there are 8 triplet eighths where there should be 6. -- it's the reason the passage stuck in my head)