While today it is easy to listen to almost any piece at any time and in almost any place, before the invention of the record it was quite complicated: you had to go to a concert or to the opera or you played yourself... In the emerging bourgeoisie, arrangements of the most popular works in instrumentations suitable for chamber music were popular and, of course, Mozart's famous operas were at the top of the popularity scale. In many places, publishers set about transcribing Mozart's works for small and very small ensembles. The two violinists Florian Deuter and Mónica Waisman have found a whole series of such contemporary arrangements of Mozart's operas and piano sonatas in "pocket format" for violin duo, which bring the well-known melodies into the new form with much wit and finesse. In the process, the listener can grin and observe the reduction of the full sound and delve into delightful details of house music around 1800.