I've been trying to source sheet music of a work for trombone quartet by Tadeusz Maklakiewicz, Chrysea Phorminx (1985), and have yet to have any luck. Below is a recording of this work featured on the Triton Trombone Quartet's 1996 album, 'Trombone Angels'

<YOUTUBE id="uijV-Mr8D0g">[media]<LINK_TEXT text="https://www.youtube.com/watch?v=uijV-Mr ... rtet-Topic">https://www.youtube.com/watch?v=uijV-Mr8D0g&ab_channel=TritonTromboneQuartet-Topic</LINK_TEXT></YOUTUBE>

Any help would be much appreciated.

The publisher is listed as:

https://autorska-agencja.pl/en/

But the date of that company does not line up with when the piece was published.