With an introduction by Misha Donat and notes on performance practice by Jonathan Del Mar and Misha Donat. Scholarly-critical performance edition at the cutting edge of scholarship.Informative Introduction and notes on period performance practice (Ger/Eng). Detailed Critical Commentary (Eng.At the dawn of the 19th century Beethoven struck out on new paths with his two opus 27 sonatas, each of which he called a 'sonata quasi una fantasia'. Both of them, in particular Sonata no. 2 which was later nicknamed the 'Moonlight Sonata', were destined for immortality. Jonathan Del Mar, second to none in his knowledge of Beethoven's music, has obtained new readings in this fastidious scholarly-critical edition of these well-known pieces. Spacious engraving and practical page turns ensure optimum pleasure for every pianist. A meticulously compiled Critical Commentary provides information on alternative readings and editorial decisions.