My list would currently look like:
Brahms - Piano Quartet no. 3, III
Chausson - Concert for violin, piano, and string quartet, III
Dvořák - String Quartet no. 13, II
Hindemith - String Quartet no. 1, II
Juon - Piano Trio no. 1, II
Ravel - Piano Trio, III
Schubert - String Quintet, II
Schumann - Piano Quartet, III
Taneyev - Piano Quartet, II
Vaughan Williams - Piano Quintet, II
kyjo - this isn't working. I think you know what you need to do.
Sammy to kyjo - don't disappear on me.
I have very few doubts about the top 2
1) Franz Schubert, Quintett C-Dur. II Adagio
2) Robert Schumann, Violinsonate 2. III Leise, einfach
the rest may be:
3) Dmitrij Šostakovič String quartet 8. I Largo
4) Antonín Dvořák, Piano quintet. II Dumka: andante con moto
5) Ludwig van Beethoven, Streichquartett 16. III Assai lento, cantante e tranquillo
6) Franz Schubert, Der Tod und das Mädchen. II Andante con moto
7) Sergej Prokofiev, Violin sonata 1. I Andante assai
8 ) Olivier Messiaen, Quatuor pour la fin du temps. 8 Louange à l'Immortalité de Jésus
9) Ludwig van Beethoven, Streichquartett 13. V Cavatina. Adagio molto espressivo
10) Robert Schumann, Fünf Stücke im Volkston. II Langsam