Coming in June, 2014. This time, String Trios Nos. 5-8, probably
String Trio in b minor (1920)
String Trio in f# minor (1920)
String Trio in G (1920)
String Trio in Ab (1923)
http://www.amazon.com/Röntgen-Complete-String-Trios-Vol/dp/B00K1LJT28/ref=sr_1_1?s=music&ie=UTF8&qid=1401068932&sr=1-1&keywords=complete (http://www.amazon.com/R%C3%B6ntgen-Complete-String-Trios-Vol/dp/B00K1LJT28/ref=sr_1_1?s=music&ie=UTF8&qid=1401068932&sr=1-1&keywords=complete)