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He played guitar , keyboards , and drum programming and sang background vocals on Beck 's Grammy - nominated 2007 single " Timebomb " and worked with Beck on the soundtrack and score for the film Nacho Libre , starring Jack Black , and also on the soundtrack for the 2010 film Scott Pilgrim vs. the World .
 person: Beck; person: Beck; person: Jack Black
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: Beck; person: Beck; person: Jack Black