Since you are interested in Korngold: Violin Sonata and other chamber pieces, here is a list of other items that you may find interesting.
BARRIOS / GRANADOS / RODRIGO / COSTE / etc
Jeffrey McFadden (guitar)
[ Naxos Laureate Series / CD - released 1/Jun/2011 ]
"Jeffrey McFadden's ability to make the guitar sing is second to none…furthermore Naxos's 1994 recording is a model of how to capture guitar sound to maximum advantage." (Daily Telegraph)
BEETHOVEN / FRANCK / LEKEU
Beethoven / Franck / Lekeu - Violin Sonatas
Yehudi Menuhin, violin / Hephzibah Menuhin, piano
[ Naxos Historical / CD - released 27/Jul/2005 ]
Collectors always have a soft spot for gramophone premières. Yehudi and Hephzibah Menuhin were the first to record the large-scale Sonata in G major by the tragic Belgian composer Guillaume Lekeu (1870-94), who died a day after his 24th birthday, and...
BRAHMS / SCHUMANN
BRAHMS / SCHUMANN: Violin Sonatas (Menuhin) (1934-1940)
Yehudi Menuhin (violin) / Hephzibah Menuhin (piano)
[ Naxos Historical / CD - released 3/Mar/2002 ]
BACH / ENESCU / PIZZETTI
Yehudi Menuhin (Violin) Hephzibah Menuhin (Piano)
[ Naxos Historical Great Violinists / CD - released 18/Apr/2006 ]
Throughout his career the great violinist Yehudi Menuhin sought out new music to perform, often commissioning works from composers, and among those who wrote for him were Béla Bartók, Lennox Berkeley, Ernest Bloch, Frank Martin and William Walton....
Violin Sonatas (with Schubert-Rondo) (Rec 1934-1938)
Yehudi Menuhin (violin) Hephzibah Menuhin (piano)
[ Naxos Historical Great Violinists / CD - released 7/Jul/2004 ]
Good duo playing depends on an intuitive understanding between the partners, which comes only after intensive study together. Of course it helps if the two musicians live in the same house and can work whenever they feel like it.
MENDELSSOHN / LALO
Violin Concerto / Symphonie Espagnole (with Chausson: Poeme)
Yehudi Menuhin (violin) / Paris Symphony Orchestra / Orchestre des Concerts Colonne
[ Naxos Historic Great Violinists / CD - released 3/Mar/2002 ]
MOZART / BEETHOVEN
Violin Sonatas (Rec 1929-47)
Yehudi Menuhin (violin) with Hephzibah Menuhin (piano)
[ Naxos Historic Great Violinists / CD - released 24/Oct/2004 ]
This release covers almost two decades of Yehudi Menuhin's career as a chamber musician. It also charts the progress, over some fourteen years, of his duo with his younger sister Hephzibah, from their earliest recording together, made in Paris more...
Violin Concerto / Baal Shem / Suite hebraique
Zina Schiff (violin) / Royal Scottish National Orchestra / Jose Serebrier
[ Naxos / CD - released 10/Nov/2007 ]
"This disc has to be given a real thumbs-up, giving us as it does all Bloch's major works for violin and orchestra in thrilling performances and with demonstration sound quality. Don't hesitate." (recording of the Month MusicWeb Dec 2007)