Given the question: What type of details about robert pete williams  can be gathered from the following bio?  Bio: robert pete williams -lrb- march 14 , 1914 -- december 31 , 1980 -rrb- was an american louisiana blues musician . his music characteristically employed unconventional structures and guitar tunings , and his songs are often about the time he served in prison . his song `` i 've grown so ugly '' has been covered by captain beefheart , on his album `` safe as milk '' -lrb- 1967 -rrb- , and by the black keys , on `` rubber factory '' -lrb- 2004 -rrb- .
The answer is:
- instrument - death place - years active - caption - birth name - label - death date - genre - birth date - name - background - image - birth place - occupation