Mental Overdrive is the primary solo moniker of Per Martinsen (born 31 July 1966), one of Norway's most prolific and influential techno musicians.
 His tracks have ranged from hardcore rave techno to vibrant space-disco, and he's always maintained a healthy balance of humor and braininess.
 Active since 1990, he began his career releasing several 12" EPs of aggressive, rave-ready hardcore techno on revered Belgian label R&S, including 12000 AD (1990), The Second Coming (1991), Move!
 (as Confusion Club, 1991), and The Love EP (1992).
 In 1994, Martinsen began releasing atmospheric techno singles as part of Illumination, his duo with Nicholas Sillitoe.
 The next year, Mental Overdrive released the single "Disto Disco," which featured a B-side ("Faith") co-written by R&S artist Outlander, best known for the 1991 classic "Vamp."
 The A-side appeared on Mental Overdrive's full-length debut Plugged, released on Martinsen's own Love OD Communications.
 The album showed a notable progression in his music, maintaining its rough, distorted hardcore techno sound while adding more cerebral elements, placing it closer to Warp's Artificial Intelligence series.
 Martinsen displayed his sense of humor with 1996's Unplugged, a limited conceptual release containing silent "versions" of the tracks on Plugged.
 083 In 1997, Mental Overdrive signed to Virgin and released About Jazz, a significantly more house/disco-influenced EP than his previous work.
 This was followed by full-length Ad Absurdum, which continued in a more light-hearted and funky direction than his previous releases.
 He took a few years off from releasing Mental Overdrive recordings, instead devoting time to Frost (his more pop-focused electronic duo with his wife Aggie Peterson) and Illumination, which released two albums on RCA.
 Following the 2003 release of Mental Overdrive's Me EP on Love OD, he signed to Norwegian label Smalltown Supersound and released full-length 083, which featured the single "Diskodans."
 In 2005, the label compiled his early R&S material on CD as The Phuture That Never Happened.
 Two years later, Mental Overdrive's single "Spooks" appeared on Prins Thomas' Full Pupp label.
 The song appeared on his next Smalltown full-length, You Are Being Manipulated, which was released in 2008.
 The album was perfectly at home with the label's other left-field dance artists like Bjørn Torske and Kim Hiorthøy, while maintaining the unique Mental Overdrive sound.
 Martinsen continued releasing Mental Overdrive singles on Full Pupp and Love OD, and contributed to Rune Lindbæk's Meanderthals project.
 In 2012, he released Man with a Movie Camera, an EP featuring music he'd composed for a 1996 screening of the Russian silent film of the same name, which also featured pieces by Biosphere which would later appear on the 2001 remaster of his classic album Substrata.
 Mental Overdrive returned to his Love OD label for 2013 full-length Cycls, as well as 2014's Everything Is Connected, which compiled a few previously released EPs.
 In 2016, Full Pupp sublabel Rett I Fletta released a new version of Plugged consisting of alternate takes sourced from the original DAT tapes.
 (Paul Simpson for allmusic.com)
Infinity Ink is a London-based vocal/music production/DJ duo made up of Italian Luca C and Briton Ali Love.
 They have released music through Hot Creations, Crosstown Rebels and, most recently, Different Recordings.
 Originally they formed the duo The Benedictions, playing 1960s and 1970s folk rock-inspired music on acoustic guitar.
 The name of the duo Infinity Ink came when the duo were playing in Moldova on their tour.
 They noticed a nearby factory that was called 'Infinity Inc'.
 So they adopted the name changing the "c" to a "k", giving it a completely new twist.
The President Is Missing is a computer simulation game from Cosmi Corporation.
 It was released in 1988 for the Commodore 64 and other systems.
 The game came with an audio cassette with different recordings and an anonymous note signed by "Saduj" (Judas in reverse).
Marius Iancu better known by his stage name Morris (born in Roman, Romania on 9 September 1976) is a Romanian singer and DJ specializing in pop music, house and electro sounds.
 He is signed to the Romanian Roton record label.
tyDi ( ; born Tyson Illingworth, 31 May 1987) is an Australian songwriter, record producer and DJ specializing in electronic dance music.
 Originally from Queensland, tyDi was signed by Armin van Buuren's Armada label at 17 and was Australia's No.1 DJ in 2008 and 2009, the youngest winner of this award.
Rave music may either refer to the late 1980s/early 1990s genres of house, breakbeat, acid house, techno and hardcore techno, which were the first genres of music to be played at rave parties, or to any other genre of electronic dance music (EDM) that may be played at a rave.
 The genre "rave", also known as hardcore by early ravers, first appeared amongst the UK "acid" movement during the late 1980s at warehouse parties and other underground venues, as well as on UK pirate radio stations.
 The genre would develop into oldschool hardcore, which lead onto newer forms of rave music such as drum and bass and 2-step, as well as other hardcore techno genres, such as gabber, hardstyle and happy hardcore.
 Rave music is usually presented in a DJ mix set, although live performances are not uncommon.
Claptone is a German DJ and electronic dance music producer who specializes in techno and house genres.
The two-CD collection, When All Else Fails...a.k.a. Early Recordings, gathers together three different recordings by Swiss trio 16-17: 1984's "Hardkore & Buffbunker" (disc one, tracks 8-12), 1987's "16-17" (disc one, tracks 1-7), and 1989's "When All Else Fails" (disc two).
 This live album by the industrial punk jazz band was released on May 20, 2005, by Savage Land.
Different Recordings is an electronic music label owned by the [PIAS], an International independent music company.
 After a 3 year hiatus, the label returned in 2015 with a family of new signings from Claptone, Anna of the North, Vessels, KLLO, Infinity Ink and Denney.
 The label looks to champion a fresh crop of forward thinking, electronic artists.
Ryuichi Sakamoto (坂本 龍一 , Sakamoto Ryūichi , born January 17, 1952) (] ) is a Japanese musician, composer, record producer, pianist, activist, writer, actor and dancer, based in Tokyo and New York.
 He began his career while a university student as a session musician, producer, and arranger in the 1970s, first gaining major success in 1978 as one third of the electronic music group Yellow Magic Orchestra (YMO).
 The band had worldwide hits such as "Computer Game / Firecracker" (1978), "Behind the Mask" (1978), and "Rydeen" (1979), playing a pioneering role in the development of the synthpop, techno and house genres.

Question: What was the ethnicity of the DJ specializing in techno and house genres signed with Different Recordings in 2015?
Answer: German