This author of The Life and Opinions of the Tomcat Murr  and The Devil's Elixirs, also wrote a story in which one character screams, "Pretty eyes!
Master Abraham connects the two parts of one novel by this author, in which the title feline's reminiscences are intercut with the biography of Johannes Kreisler. Another novel by this author contains a hairdresser with two personalities, known alternately as Peter Schoenfeld and Pietro Bellocampo, who tries to save the monk Medardus from the title substance. This author of The Life and Opinions of the Tomcat Murr  and The Devil's Elixirs, also wrote a story in which one character screams, "Pretty eyes! Pretty eyes!" before jumping off a balcony to his death. That character is engaged to Clara but is enchanted by the automaton Ophelia and becomes deranged when he believes a barometer salesman to be the title figure. For 10 points, name this German author of "The Sandman".
Master Abraham connects the two parts of one novel by this author, in which the title feline's reminiscences are intercut with the biography of Johannes Kreisler.
Ernst Theodor Amadeus Hoffman  HZ