Question: When was the German heavy metal singer-songwriter born who  first two solo albums are contained in Earth Shaker Rock?

Context articles: Running Wild (band)
Rare Diamonds
Thunder Rider
Dezperadoz
Udo Dirkschneider
Kazuha Oda
Accept (band)
Doro (musician)
Masatoshi Ono
Earth Shaker Rock

Running Wild is a German heavy metal band, formed in 1976 in Hamburg.
 They were part of the German metal scene to emerge in the early to mid-1980s.
 Over the course of their career, they have released sixteen studio albums, three live albums, five compilation albums, and six singles/EPs.
 Although their earlier releases contained Satanic themes and imagery, Gerald "Preacher" Warnecke, the guitar player of the band, was studying theology at the time and is now a vicar in Cologne.
Rare Diamonds is a compilation album, containing songs of the German heavy metal band Warlock and songs coming from Warlock singer Doro Pesch's first two solo albums.
 The album was released as LP in 1991 at the same time of a VHS with videos of the band and Doro's.
Thunder Rider is the comeback album by German heavy metal band Majesty.
 It was released on January 4, 2013, through Noiseart Records in both standard and deluxe editions.
 The deluxe edition included an additional DVD which contained a documentary titled "Metal Union".
 The DVD features interviews with bands and journalists and tries to unveil the secret of heavy metal music.
 The song, "Metal Union", which concludes the album is a musical conversion of this topic.
 It features guest appearances by Sven D´Anna (Wizard), Hannes Braun (Kissin´ Dynamite), Mat Sinner (Primal Fear / Sinner), Patrick Fuchs (Ross The Boss), Andreas Babushkin (Paragon) and Marta Gabriel (Crystal Viper).
Dezperadoz (formerly "Desperados") is a German "Western-metal" band and is the side-project of Tom Angelripper's guitarist Alex Kraft.
 The band plays heavy metal music that is heavily influenced by the soundtracks of the 1960s and 1970s Spaghetti western movies.
 They've released four albums, two on the German heavy metal record label AFM.
 They've also had guest appearances by many notable heavy metal musicians including Michael Weikath, Tobias Sammet, Joacim Cans, and Doro Pesch.
Udo Dirkschneider (born 6 April 1952) is a German heavy metal singer who rose to fame with German heavy metal band Accept.
 After leaving Accept in 1987, he formed U.D.O., with whom he has enjoyed commercial success as well.
Kazuha Oda is a classically trained singer/singer-songwriter born in Japan.
 She started out as a solo singer and has worked with wide variety of performers including Grammy winner Bob James.
 She worked on numerous projects including: 6 albums, 5 singles, and contributed to over 10 compilation albums ranging from Classic to Heavy Metal music until now.
 Much of her work has appeared on the iTunes top 100 around the world.
Accept is a German heavy metal band from the town of Solingen, originally assembled by former vocalist Udo Dirkschneider, guitarist Wolf Hoffmann and bassist Peter Baltes.
 Their beginnings can be traced back to the late 1960s.
 The band played an important role in the development of speed and thrash metal, being part of the German heavy metal scene, which emerged in the early to mid-1980s.
 Accept achieved commercial success with their fifth studio album "Balls to the Wall" (1983), which is the band's only album to be certified gold in the United States and Canada, and spawned their well-known hit "Balls to the Wall".
Dorothee Pesch (born 3 June 1964), popularly known as Doro Pesch or Doro, is a German heavy metal singer-songwriter, formerly front-woman of the heavy metal band Warlock.
 The name Doro has also been associated with the touring band accompanying the singer, whose members have continuously changed in more than twenty years of uninterrupted activity, the most stable presences being those of bassist Nick Douglas and drummer Johnny Dee.
Masatoshi Ono (小野正利 , Ono Masatoshi , born January 29, 1967 in Adachi, Tokyo, Japan) , also known as Sho, is a Japanese rock/heavy metal singer-songwriter and vocal coach.
 Ono got his start in the 1980s as vocalist of the heavy metal band Fort Bragg.
 In 1992, he released his first solo single, "Pure ni Nare", on Sony Records.
 But it wasn't until his third single, "You're the Only...", that he hit it big.
 The single helped Ono win the "Rookie of the Year" award at the 34th Japan Record Awards and an invitation to that year's "Kōhaku Uta Gassen".
Earth Shaker Rock is a compilation album, containing songs of the German heavy metal band Warlock and songs coming from Warlock singer Doro Pesch's first two solo albums.
 It is the last album issued under the Warlock moniker and was released on CD in 1999 by the British label Connoisseur Collection, specialized in compilation albums of various recording artists.