You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Sony_Music_Entertainment

Context:
In August 2004, Sony entered joint venture with equal partner Bertelsmann, by merging Sony Music and Bertelsmann Music Group, Germany, to establish Sony BMG Music Entertainment. However Sony continued to operate its Japanese music business independently from Sony BMG while BMG Japan was made part of the merger.

Question:
In what year did Sony and BMG Germany merge?

2004