This is a mixed set of Beethoven Concertos, Sonatas and the Diabelli Variations. They include the complete piano concertos, 1-5. The releases are :
Piano Concertos Nos. 1 and 2 - The Royal Philharmonic under Andre Previn, Emanuel Ax pianist. An RCA release.
Piano Concertos Nos. 3 and 4 - Same Orchestra, conductor and pianist, RCA as well.
Piano Concerto No. 5 "Emperor" - London Philharmonic Orchestra conducted by Alfred Brendel, Bernard Haitink pianist. This CD also includes "Fantasia in C minor for piano, chorus and orchestra, using the same performers. A Philips release.
Violin Concerto in D - Columbia Symphony Orchestra, Bruno Walter conducting. Zino Francescatti, violin. CBS Masterworks recording.
Violin Sonata No. 9 "Kreutzer", in A - Maxim Vengerov Violin, Alexander Markovich Piano. Also included, Brahms Violin Sonata No. 2 in A, same performers. A Teldec Classics release.
Diabelli Variations - 33 Variations in C on a Waltz by Anton Diabelli. Pianist is Sviatoslav Richter. This is a live recording from Concertgebouw, in Amsterdam. June 17, 1986. A Philips release.
These are all wonderful recordings and provide a full collection of Beethoven's Piano Concertos and some classic examples of his Violin compositions.