The novel was first published in 2006 and since then has been re-published a number of times, in different languages. There have been four Spanish editions, each with a different cover; two Italian editions, by different publishers — two German, and Dutch. On all major online stores you may easily find the editions in English, Spanish (Nannerl, la hermana de Mozart), and Italian (La sorella di Mozart).
Below is an overview of the book covers. They are all beautiful, but… may I say that my favourite is the German one by Blanvalet?