Answer the following question: Read the bio below and try to give details on thunder -lrb- singer -rrb- 's: - birth name - name - image - associated acts Bio: park sang-hyun -lrb- ; born october 7 , 1990 -rrb- better known by his stage name thunder -lrb- -rrb- , is the younger brother of 2ne1 's vocalist sandara park , a south korean idol and was a member of south korean idol group mblaq until december 16 , 2014 , when it was announced that cheondung had departed from the group to focus on studying music for a while . he was revealed to have joined mystic entertainment 's music label , apop , on february 11 , 2015 . along with his native language korean , he is fluent in english , tagalog and conversational mandarin and japanese .
Answer:
- birth name is park source sang-hyun february 2015 wordpress is not a reliable- name is thunder- image is mblaq 11.jpg @ cyworld dream music festival - associated acts is mblaq , sandara park , rain -lrb- singer -rrb-