Meet A. Sunday December the 28th. Mostly overcast lighting with some sunshine here and there.

 D5, 105mm 1.4 @f4 

I'm really intrigued by the concert.  Thank you for sharing.  The reaction seems to be fairly typical for such an experimental music.

Thank you, Akira.

Academic Music can be a challenge to untrained ears. As I know we both love Olivier Messiaen, I know your ears are well trained in Music denominated as "modern" and "contemporary" and "new" ... the electronics guy has studied here: https://ifnm.hfmt-koeln.de/institut/studio-fuer-elektronische-musik/ the recorder and accordeon players met in their studies here: https://www.wuppertal.de/kultur-bildung/hochschulen/musikhochschule/index.php
They founded their duo "Windspiel" 25 years ago: https://windspiel-neuemusik.jimdofree.com
 Benjamins Homepage is here (interesting videos there): https://graumusic.de/
His "live composing midi controller" ist his own work. Her designed the PCB layout and did all the soldering apart from the SMD-soldering. There are also two foot pedals

Yes that is my current plan.  Managed to remove the press fit ring cut from a lens hood.  Have errands to run today but may be able to work on it today or tomorrow.  Erik, thanks for the suggestions.

Was debating removing the front element group for the glue step but thinking I don't need to go there.  Trying to do as little harm as possible.

All that being said, from various test shots during the modification, I really like this lens in FX mode!

A ring cut from the original petal hood would possibly work. A bit tricky to glue though.

Bicycle stop

D850  28/1.4