Piano Sonata No. 12 in A-flat Major, Op. 26 (Funeral March) (Revised Edition). By Ludwig van Beethoven (1770-1827). Edited by Murray Perahia and Norbert Gertsch. For Piano. Henle Music Folios. Softcover. 32 pages. G. Henle #HN892. Published by G. Henle (HL.51480892).
Norbert Gertsch, editor-in-chief at Henle Publishers, undertook a thorough revision of this edition, together with the renowned pianist Murray Perahia. In addition, the latter also provided fingerings and shares some of his personal thoughts on this work.