The piano quartet played at the G7 summit party

Yo Yo Ma et al, renowned players, have played a piano quartet as the news says as below.

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Classic FM

Classical stars perform for world leaders at the G7 summit in Evian, France. 

An international quartet comprising of American cellist Yo-Yo Ma, British violist Timothy Ridout, French violinist Renaud Capuçon, and Italian pianist Beatrice Rana took to the stage last night to perform the finale of Brahms’ Piano Quartet No.1.

They were introduced by French president Emmanuel Macron, to an audience that also included Keir Starmer, Donald Trump, and Volodymyr Zelenskyy.

 Alexandra Lebon
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This piece is a sophisticated chamber music by Brahms composed in his young days. Conflicts in mind while yearning for something. It's hard to believe a young Brahms has composed such a serious work in his youth. 
It begins with the dialogue between cello and viola following the theme presented by piano. It seems to express inner conlicts and to govern the entire 1st movement. The 2nd theme given by cello sounds full of longing characteristic for youth. In my view, both themes won't be resolved and drive and develop the music.
The following movements are also dominated by the same mood. It is amazing young Brahms has put such conflicts and tension into this quartet. The last movement is pictured with bohemian melody, tranquil and sweet. It soon turns to be the vivid cadenza in forte and accelerando.  
It is amazing such a piece was chosen for rendition at the summit party. I suspect "the pretending boss" might have fallen asleep hearing the elegiac melody in bohemian style while startling awake at the end.  
The actual performance at the summit is not available. In stead, here is another excellent perormance;