paragraph_text: "Harvester of Sorrow" is a song by the American heavy metal band Metallica. It was released as the first single from their fourth studio album, "...And Justice for All" (1988). The song debuted at a live performance prior to the release of "...And Justice for All" while on the summer Monsters of Rock Tour in 1988 with Van Halen, Scorpions, Dokken and Kingdom Come.

paragraph_text: Robert Hart (born 1 November 1958, Bournemouth, Dorset) is a British rock vocalist and songwriter. He is currently the lead singer of Manfred Mann's Earth Band and the band Diesel. He has performed as a solo artist, and with The Distance and also with former Whitesnake members in the band called Company of Snakes and with Bad Company. He also fronted The Jones Gang, a rock group formed by Hart, Rick Wills and Kenney Jones. He now performs as a solo artist as well as touring with his own band XBad Company, with Dave "Bucket" Colwell and Garry "Harry" James (ex-members of Bad Company). He was the first English writer to be signed to Disney owned Hollywood Records. He has also written several Number 1 hits, and written a number of songs for film soundtracks, whilst being signed to Roy Orbison's Still Working Music, Disney's Hollywood Records, and Island Records.

paragraph_text: As of 2007, Van Halen has sold 75 million albums worldwide and have had thirteen No. 1 hits on the Billboard Mainstream Rock chart. During the 1980s they also had more Billboard Hot 100 hits than any other hard rock or heavy metal band. According to the RIAA, Van Halen is the nineteenth best - selling band / artist of all time with sales of over 56 million albums in the US, and is one of five rock bands that have had two albums (Van Halen and 1984) sell more than ten million copies in the US.

paragraph_text: ``I'm Gonna Be (500 Miles) ''is a song written and performed by Scottish duo The Proclaimers, and first released as the lead single from their 1988 album Sunshine on Leith. The song reached number 11 in the UK Singles Chart on its initial release, and it has since become their most popular song worldwide, initially becoming a number 1 hit in Iceland, before reaching number 1 in both Australia and New Zealand in early 1989.

paragraph_text: The band had a long string of album releases many reaching number 1 on the Austrian official charts. The band also had a number of hit singles. It won the Amadeus Austrian Music Award in the category Group Pop / Rock in 2003 followed in 2009, with another Amadeus Award win in the Schlager category.

paragraph_text: "Tonight She Comes" is a 1985 song by American rock band The Cars, from their "Greatest Hits" album. It was released as a single in October 1985, reaching Number #7 on the "Billboard" Hot 100 in January 1986. The song reached Number #1 on the Top Rock Tracks charts, where it stayed for three weeks.

paragraph_text: "When It's Love" is a power ballad by the American rock band Van Halen. It was released as a single from their album "OU812". It was the most popular song from that album, hitting #1 on the "Billboard" Mainstream Rock charts and #5 on the "Billboard" Hot 100 chart. The song has been a live performance staple since it was released in 1988. The song was also included in the set list for the band's ill-fated 1998 tour with Gary Cherone. Eddie has stated that this particular guitar solo is a nod to Eric Clapton.

paragraph_text: The Monsters of Rock Tour 1988 was a festival tour headlined by hard rock band Van Halen as part of their promotion for their "OU812" album. The Scorpions were a co-headliner. Opening bands included Metallica, Dokken, and Kingdom Come. It formed the first section of the OU812 Tour, the main part of which followed immediately after Monsters of Rock 1988. As one of the many well-known Monsters of Rock tours, the tour featured an impressive line-up, especially for a single-day event, and proved very popular.

paragraph_text: ``The House of the Rising Sun ''is a traditional folk song, sometimes called`` Rising Sun Blues''. It tells of a life gone wrong in New Orleans; many versions also urge a sibling to avoid the same fate. The most successful commercial version, recorded in 1964 by British rock group the Animals, was a number one hit on the UK Singles Chart and also in the United States and France. As a traditional folk song recorded by an electric rock band, it has been described as the ``first folk - rock hit ''.

paragraph_text: ``It's Still Rock and Roll to Me ''is a hit 1980 song performed by Billy Joel, from the hit album Glass Houses. The song was number 1 on the Billboard Hot 100 charts for two weeks, from July 19 through August 1, 1980. The song spent 11 weeks in the top 10 of the Billboard Hot 100 and was the 7th biggest hit of 1980 according to American Top 40. The song is an examination of the themes of a musician's degrading fame and public tastes that were expressed in his 1975 hit`` The Entertainer''.

paragraph_text: "Gemini Dream" is a 1981 single by the progressive rock band The Moody Blues. It reached number 12 on the US Hot 100, as well as number 1 on the Canada "RPM" Top 100 Singles chart. It is ranked as the 28th biggest Canadian hit of 1981.

paragraph_text: "Let There Be Love" was an album of songs recorded by Joni James as airchecks, released by Jasmine Records on March 1, 1993. While many of the songs included on the album were hits for Joni James in the 1950s, these are different performances.

paragraph_text: ``The House of the Rising Sun ''is a traditional folk song, sometimes called`` Rising Sun Blues''. It tells of a life gone wrong in New Orleans; many versions also urge a sibling to avoid the same fate. The most successful commercial version, recorded in 1964 by British rock group the Animals, was a number one hit on the UK Singles Chart and also in the United States and France. As a traditional folk song recorded by an electric rock band, it has been described as the ``first folk rock hit ''.

paragraph_text: In 2009, Gaga spent a record 150 weeks on the UK Singles Chart and became the most downloaded female act in a year in the US, with 11.1 million downloads sold, earning an entry in the "Guinness Book of World Records". "The Fame" and "The Fame Monster" together have since sold more than 15 million copies worldwide. This success allowed Gaga to start her second worldwide concert tour, The Monster Ball Tour, and release "The Remix", her final record with Cherrytree Records and among the best-selling remix albums of all time. The Monster Ball Tour ran from November 2009 to May 2011 and grossed $227.4 million, making it the highest-grossing concert tour for a debut headlining artist. Concerts performed at Madison Square Garden in New York City were filmed for an HBO television special, "". Gaga also performed songs from her albums at the 2009 Royal Variety Performance, the 52nd Annual Grammy Awards, and the 2010 BRIT Awards. Before Michael Jackson's death, Gaga was set to take part in his canceled This Is It concert series at the O Arena in the UK.

paragraph_text: ``You're No Good ''is a song written by Clint Ballard, Jr., first performed by Dee Dee Warwick for Jubilee Records in 1963 with production by Jerry Leiber and Mike Stoller. It has since been covered by many artists, including charting versions by Betty Everett in 1963, The Swinging Blue Jeans in 1964, and Linda Ronstadt in 1975, whose version was a number 1 hit in the United States.

paragraph_text: ``If It Makes You Happy ''is the lead single from Sheryl Crow's 1996 eponymous album. The song peaked at number ten on the Billboard Hot 100 chart in the US. The track won Best Female Rock Vocal Performance at the 1997 Grammy Awards. The song ties with her hit,`` My Favorite Mistake'', as her third highest - charting single in the UK, reaching number nine on the UK Singles Chart. It also peaked at No. 1 in Canada and was her second No. 1 hit on the Canadian Hot AC chart.

paragraph_text: ``I Am the Walrus ''is a song by the Beatles released in November 1967. It was featured in the Beatles' television film Magical Mystery Tour in December of that year, as a track on the associated British double EP of the same name and its American counterpart LP, and was the B - side to the number 1 hit single`` Hello, Goodbye''. Since the single and the double EP held at one time in December 1967 the top two slots on the British singles chart, the song had the distinction of being at number 1 and number 2 simultaneously.

paragraph_text: Touring Band 2000 is the second DVD release by the American alternative rock band Pearl Jam, culled from performances from the North American legs of the band's 2000 Binaural Tour. It was released on VHS and DVD on May 1, 2001.

paragraph_text: After the Brothers in Arms tour ended Mark Knopfler took a break from Dire Straits and during 1987 he concentrated on solo projects and film soundtracks. Dire Straits regrouped in 1988 for the Nelson Mandela 70th Birthday Tribute concert staged on 11 June 1988 at Wembley Stadium, in which they were the headline act. They were joined for their set by Eric Clapton who performed his hit "Wonderful Tonight" with the group and played rhythm guitar on the other songs performed by the band, while guitarist Jack Sonni was absent. Soon afterwards, Williams left the band.

paragraph_text: ``Cherry Pie ''is a song by the American rock band Warrant. It was released in September 1990 as the lead single from the album of the same name. The song became a Top Ten hit on the Billboard Hot 100, reaching number 10 and also reached number 19 on the Mainstream Rock Tracks. The song has been cited by many as a`` rock anthem''. In 2009, it was named the 56th best hard rock song of all time by VH1.

Question: How many number 1 hits did the performer of Monsters of Rock Tour 1988 have?
Answer: thirteen