6740
Here too he became a close friend of Meyerbeer ( at that time still a piano virtuoso , not yet a composer ) and their extemporized piano-duets were highly acclaimed .
 person: Meyerbeer
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Meyerbeer