One of the great virtues of the new Liszt Sonata app from Touch Press is that it describes Liszt’s great B minor sonata as we actually hear it, not as we ought to hear it. Like all Touch Press’s offerings, it looks very classy, and is very easy to navigate. If you want to know what the standard sonata-form looks and feels like, there’s a whole chapter devoted to the history of the form before Liszt. If you want to know more about Liszt himself, there’s a chapter on him. Nicely chosen portraits show the transition from the slim, good-looking ladykiller of the 1830s to the pensive Romantic seer of the 1850s and the battered grey-haired old cleric of the final years.