What key details about oz -lrb- finnish band -rrb- can be extracted from the following bio? Bio: oz -lrb- written oz -rrb- is a heavy metal band originally from nakkila , finland . it was formed in 1977 , split in 1991 and re-established 2010 . since 1983 oz has been active mostly in sweden as the band members moved to stockholm after the release of their second album . in 2010 drummer mark ruffneck -lrb- born pekka mark -rrb- , bassist and main songwriter jay c. blade -lrb- born jukka homi , but has changed his name to jukka lewis -rrb- and vocalist ape de martini -lrb- born tapani hamalainen -rrb- re-formed the band together with costello hautamaki and markku petander . they made a splash with their 1983 album '' fire in the brain '' , a new wave of british heavy metal-flavored energetic metal affair that won over critics and fans alike . the subsequent albums , however , failed to elicit the same response , and the band faded from worldwide view . the band reformed in 2010 and released a new album the following year .
Answer:
- years active is 1977-1991 ; 2010-present- past members is costello elo fredrik thornholm michael lundholm tauno vajavaara tobbe moen jorgen hautamaki schelander spooky wolff speedy foxx esa niva kari- origin is nakkila , finland- genre is heavy metal , power metal- name is oz- background is group_or_band- current members is ape demartini jay c. blade mark ruffneck markku petander