Question: Which singer has released more solo albums, Robb Flynn or Mike Score?

full_context: Document 1: Mike Score: Michael Gordon "Mike" Score (born 5 November 1957) is an English musician. He is best known as the keyboardist, guitarist and lead singer of the new wave band, A Flock of Seagulls. He released a solo album on 1 March 2014 titled "Zeebratta".
Document 2: Conrad Lant: Conrad Thomas Lant (born 15 January 1963), also known by the stage name of Cronos, is an English musician. He is the vocalist and bass player of the influential Thrash metal/black metal band Venom, from 1979 to 1989 and from 1994 to present.
Document 3: Machine Fucking Head Live: Machine Fucking Head Live is the second live album from the American heavy metal band Machine Head. And it is the final release to include bassist Adam Duce who was fired, due to ongoing differences on February 11, 2013. The album was released on November 13, 2012, under Roadrunner Records. It was recorded at Central, Manchester on December 6, 2011 (except Locust & Halo recorded at SECC, Glasgow on December 5, 2011). "The Head Cases [Machine Head's nickname for their fans] have been so intense on this tour cycle that we had to start capturing the shows, especially with technology making it so much easier to record," said frontman Robb Flynn. "We culled some of the best nights where the band and crowd were on fire and made a badass, nearly two-hour, double live album, which is a great documentation of where the band is at, 18 years deep."
Document 4: Mike Lake (footballer): Mike Lake (born 16 November 1966 in Manchester) is an English retired footballer. After been a peripheral figure in his first few seasons at Sheffield United and hindered by injuries, Lake then featured more regularly in the early 1990's once United were back in the old First Division. Lakes time at United is best remembered during the 1991–92 season where he had a consistent spell in the team and scored 4 times in 4 games, all of which were opportunist and often spectacular. Lake with his distinctive long hair and sudden goal scoring streak became a cult-hero at United and as a result of the spectacular goals the Blades fans nicknamed Lake, Mike "Zico" Lake, after the famous Brazilian footballer Arthur Antunes Coimbra, better known as Zico. In particular, Lake is remembered at United for his long range goal against Southampton in a 4 - 2 victory at The Dell. The goal was also nominated for goal of the month and was described as a "Brazilian bender" by United's manager Dave Bassett. Lake also scored a second in the same match, again from long range, this time aided by a deflection.
Document 5: Unto the Locust: Unto the Locust is the seventh full-length studio album by American groove metal band Machine Head, released in Australia on September 23, in the UK on September 26 and worldwide on September 27, 2011. The album was produced and mixed by Robb Flynn, and it was the band's highest charting album ever, charting at 22 on the "Billboard" 200, until their following release "Bloodstone & Diamonds" charted at 21. "Unto the Locust" was recorded in Green Day's Jingletown Studios. On June 14, 2011, Machine Head released the advance mix of their album track "Locust", which was included on the 2011 Mayhem Festival iTunes sampler. This would be Machine Head's last studio album with co-founder and bassist Adam Duce before he was fired due to "ongoing differences" with the band on February 11, 2013. It has sold over 100,000 copies in the United States. At just under 49 minutes long it is the band's shortest album released to date.
Document 6: Machine Head (band): Machine Head is an American heavy metal band from Oakland, California. Formed on October 12, 1991, the group was founded by vocalist/guitarist Robb Flynn and bassist Adam Duce. The current lineup of the band comprises Flynn, drummer Dave McClain, guitarist Phil Demmel and bassist Jared MacEachern. Machine Head is one of the pioneering bands in the new wave of American heavy metal.
Document 7: Zeebratta: Zeebratta is the debut album of Mike Score, the lead singer of A Flock of Seagulls. It was released on digital download on March 1, 2014, and will be later be released on physical copies. Two singles were released from the album, "All I Wanna Do" and "Somebody Like You".
Document 8: Michael Fall: Michael Fall, (born, Lokeren, June 9, 1980) is a Belgian DJ, producer, and remixer from Moerbeke-Waas, Belgium. Michael Fall is currently signed on different record labels worldwide. In the past he signed deals with major labels such as Universal Music Group, CNR Records in Belgium & ZYX Music records in Germany. He released many songs that have charted in Belgian and foreign charts. He ended his publishing contract with BMC Universal in November 2012 and signed a new publishing contract in November 2012 at the Dutch independent music publisher Strengholt Music Group. In 2013 he released his debut album called 'Turn on your radio' and was listed in the official Belgium album charts. Michael is owner of MFrecords based in Belgium and he owns a record store in Zelzate. In 2014 he received a golden award for his debut album. On 31 July 2015 he released his second album called 'Ain't nothing but a party'.
Document 9: Robbie Crane: Robert Crane (born January 5, 1969 in Orange County, California) is the current bass guitarist with hard rock band Black Star Riders. He is also a member of Ricky Warwick's band The Fighting Hearts. He was previously the bassist with the band Ratt.
Document 10: Robb Flynn: Robert Conrad "Robb" Flynn (born Lawrence Matthew Cardine; July 19, 1967) is the lead vocalist and guitarist for the heavy metal band Machine Head. Flynn formed the band along with Adam Duce, Logan Mader and Tony Costanza after leaving Bay Area thrash band Vio-Lence.
Document 11: Michael Stipe: John Michael Stipe (born January 4, 1960) is an American singer, songwriter, musician, film producer, music video director, visual artist, and philanthropist. He is best known as the lead singer of the alternative rock band R.E.M. from their formation in 1980 until their dissolution in 2011.
Document 12: Mike Perry (DJ): Mikael Persson, better known by his stage name Mike Perry is a Swedish DJ and music producer from Skövde. He is best known for his 2016 single "The Ocean" featuring vocals from Shy Martin, which peaked at number 1 on the Swedish Singles Chart.
Document 13: Phil Demmel: Phil Demmel (born April 2, 1967) is the lead guitarist for American heavy metal band Machine Head, and is currently their longest running member in that position. He was also a founding member of Vio-lence, which also included Machine Head guitarist/vocalist Robb Flynn. Demmel was also a member of Torque.
Document 14: Mike Gatten: Mike Gatten (born July 15, 1965) is an American entrepreneur and inventor of the Miracle Blanket which is a comfortable stretchy blanket designed to help babies sleep comfortably. Before inventing the Miracle Blanket, Mike worked for a few different companies and was invested in some very lucrative business ventures. He then founded AMB Enterprises in 2003 to manufacture, sell and distribute the Miracle Blanket. "AMB" stood for "Amazing Miracle Blanket". And in 2009, he launched Miracle Fulfillment, LLC to distribute Miracle Industries, LLC products as well as shipping, distribution and fulfillment for national companies large and small. Along with having a successful career, Mike is also the executive producer and drummer for the popular New Mexico band, Chasing Disaster, which released its first album in January 2011. Chasing Disaster was nominated by the New Mexico Music Awards in the “Main Stream Rock” [sic?] category for its album "Bullet for a Rose". Mike is also a sculptor of life-sized, whimsical, mixed media sculptures sold in a prominent gallery in Los Angeles, CA. Mike, his wife Mindi and three children currently reside in Rio Rancho, NM.
Document 15: Mick Hucknall: Michael James Hucknall (born 8 June 1960) is an English singer and songwriter. Hucknall achieved international fame in the 1980s as the lead singer and songwriter of the soul-influenced pop band Simply Red, with whom he enjoyed a 25-year career and sold over 50 million albums. Hucknall has been described as "one of the truly great blue-eyed soul singers".
ground_truth: Michael Gordon "Mike" Score