The last movement of the String Quartet No. 2 (2012) presents the main theme ("refrain") with canon technique over ostinato contrasted with various episodes (amongst them with passacaglia chordal idea which predominates second phase of the movement).

Pawel Strzelecki: 4. "Scottish Reel" (original, 2012 version) [String Quartet No. 2 (2012)].

Polish Composer (M.A., 2002, "F. Chopin" Academy of Music in Warsaw,  Prof. Zbigniew Baginski's class), music theorist (M.A., 2000, "F. Chopin" Academy of Music in Warsaw, under Prof. Maria Piotrowska), musicologist (Ph.D., 2005, University of Warsaw, under Prof. Zbigniew Skowron), researcher, lecturer.
So far he has written 128 pieces: 12 symphonies (2017-2024), 3 symphonic poems (2001-2011), 4 concertos with orchestra (organ, piano, two pianos, flute, 2002-2025), 22 string quartets (2001-2025), 17 sonatas for different solo instruments with piano (violin, cello, oboe, trombone, etc.), chamber music as Piano Trio (1998), Piano Quartet (2021), Piano Quintet (2003), String Trio (2021), numerous songs for voice and piano, sacred works, e.g. Mass for soloists, choir, organ and orchestra (2002, rev. 2024), and electronic music.  
The stylistic and technical parameters describes the text below:
https://pawelstrzelecki.wixsite.com/music
The author of the crucial, first and original book (used as academic manual and present in many libraries) on "New Romanticism" in Polish music after 1975, containing interview of the author with Krzysztof Penderecki (2022, English Language Edition).
https://www.peterlang.com/document/1282565?fbclid=IwAR1Pm40flHnsqH07OsvXdXwV1ZwLeVLOmfrxkqe3wxL5rsJioluBL-2FQ9M#document-details-anchor
Polish edition (2006):
https://mi.pl/pl/p/Pawel-Strzelecki-Nowy-romantyzm-w-tworczosci-kompozytorow-polskich-po-roku-1975/59

The book was quoted in: Andrea Bohlman: "Musical Solidarities. Political Action and Music in Late Twentieth-Century Poland". Oxford University Press, 2020, pp. 208, 266. The link to the quotation (p. 208):
https://books.google.pl/books?id=uNnBDwAAQBAJ&pg=PA208&dq=bohlman+nowy+romantyzm&hl=en&sa=X&ved=2ahUKEwjoyL-x-Lf4AhXOk4sKHUWMChUQ6AF6BAgEEAI#v=onepage&q=bohlman%20nowy%20romantyzm&f=false

Ionut Mirel Udrea (Member Of APRA/AMCOS) is a music composer, piano player and music producer based in Sydney - Australia. 
Ionut Mirel Udrea composes emotive piano-based instrumental music.

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Pawel Strzelecki: 4. "Scottish Reel" (original, 2012 version) [String Quartet No. 2 (2012)].

Pawel Strzelecki, Ph.D.