Oz
Group · Finland · Nakkila · formed 1977
Finnish heavy metal band
Timeline
1970s
Biography
Biography
Oz (styled as OZ) is a Finnish 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 (born Pekka Mark), bassist and main songwriter Jay C. Blade (born Jukka Homi, but has changed his name to Jukka Lewis) and vocalist Ape De Martini (born Tapani Hämäläinen) re-formed the band, together with Costello Hautamäki and Markku Petander. As of 2016, OZ consists of four different members from Pori, Finland with Ruffneck being the original sole member.
They made a splash with their 1983 album Fire in the Brain, a NWOBHM-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 Burning Leather in 2011. The album Transition State was released on 20 October 2017 by AFM Records. The latest album, Forced Commandments, was released in May 2020 by Massacre Records.
Current members
Mark Ruffneck (Pekka Mark) – drums, percussion (1977–1991, 2010–present)
Peppi Peltola - bass, vocals (2015–present)
Juzzy Kangas - guitars, vocals (2015–present)
Johnny Cross - guitars, vocals (2015–present)
Vince Koivula – lead vocals (2016–present)
Former live musicians
Michel Santunione - guitar
John Berg - guitar
Johannes Sandberg - bass
Former members
Ape De Martini (Tapani Hämäläinen) – lead vocals (1977–1991, 2010–2016)
Jay C. Blade (Jukka Lewis) – bass, vocals (1982–1987, 2010–2016)
Markku Petander – guitars (2010–2011)
Costello Hautamäki - guitars (2010)
Michael Lundholm – guitars (1990–1991)
Jörgen Schelander – keyboards (1990–1991)
Fredrik Thörnholm – bass (1990–1991)
Tobbe Moen – bass (1990)
Spooky Wolff – guitars (1983–1987)
Speedy Foxx – guitars (1983–1987)
Esa Niva – guitars (1982–1983)
Tauno Vajavaara – bass (1977-1982)
Kari Elo – guitars (1977-1982)
Studio albums
Heavy Metal Heroes (OZ) (1982)
Fire in the Brain (1983)
III Warning (1984)
...Decibel Storm... (1986)
Roll the Dice (1991)
Dominator (Promo CD) (2011)
Burning Leather (2011)
Transition State (2017)
Forced Commandments (2020)
Singles
1982 – "Second-Hand Lady" / "Rather Knight"
2011 - "Dominator"
2012 – "The Show Must Go On" / "Signs from the Dead"
2023 - "Undercover" / "Wicked Vices"
Compilation albums
1987 – III Warning + ...Decibel Storm...
2012 – Vinyl Tracks
Discography & profile
Normalised profile
Percentiles are computed over every artist in the database, so a tier-3 artist can still sit in the 95th percentile on a single axis.
| Metric | Value | Percentile |
|---|---|---|
| Wikipedia language versions | 7 | 44.7th |
| Spotify monthly listeners | — | no data |
| Release groups in DB | 0 | 0th |
| Studio albums | 0 | 0th |
| Awards recorded | 0 | 0th |
| Timeline events | 1 | 40.6th |
| Recording span (years) | 49 | 90th |
| Genres | 1 | 56th |
Percentiles are computed at render time; missing values mean the artist has no data on that axis.
Discography (0 release groups)
No discography rows stored yet
MusicBrainz enrichment for this artist is still pending. Release groups appear here once it runs.
Stats & PK
Percentile within all 23,672 published artists.Put Oz head-to-head →
| Metric | Value | Percentile |
|---|---|---|
| Wikipedia language versions | 7 | 44.7th |
| Spotify monthly listeners | — | no data |
| Release groups in DB | 0 | 0th |
| Studio albums | 0 | 0th |
| Awards recorded | 0 | 0th |
| Timeline events | 1 | 40.6th |
| Recording span (years) | 49 | 90th |
| Genres | 1 | 56th |
Awards & honours
Where this record comes from
core—wikidata · CC0 · retrieved 10 October 2026
https://www.wikidata.org/wiki/Q1998115genre—wikidata · CC0 · retrieved 11 October 2026
https://www.wikidata.org/wiki/Q1998115seed-list—wikipedia · CC BY-SA 4.0 · retrieved 10 October 2026
https://en.wikipedia.org/wiki/Oz_%28band%29biography—wikipedia-en · CC BY-SA 4.0 · retrieved 10 October 2026
https://en.wikipedia.org/wiki/Oz_%28band%29
Why this artist is in the database
- List of heavy metal bands — rank #189
Tier rule: curated genre/region list
Image: no portrait (not displayed: the licence credit is missing)
Wikidata: Q1998115 · MusicBrainz: 6df7b20c-881f-415b-b245-e74dd9f4526f
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