Please answer the following question: - instrument is vocals piano guitar    - years active is 2004 -- present    - caption is grey performing in 2014 .    - birth name is holly brook hafermann    - origin is mazomanie , wisconsin , united states    - genre is pop alternative      - alias is holly brook    - birth date is 23 february 1986      - background is solo_singer    - image is skylar grey in 2014 -lrb- cropped -rrb- . jpg    - associated acts is eminem    - occupation is singer songwriter    Given the details above, guess who could this information be about.
Answer:
skylar grey