Matti Antero Kristian Fagerholm (born 17 June 1962 in Helsinki), best known by his stage name, Michael Monroe, is a Finnish rock musician and multi-instrumentalist who rose to fame as the vocalist for the glam punk band Hanoi Rocks, and has served as the frontman for all-star side projects, such as Demolition 23.
 and Jerusalem Slim (with Steve Stevens).
Epiphany is a 1997 mystery novel by British author David Hewson.
 The story delves between two linear timelines, one in the 1970s the other the 1990s, and explores elements of drugs, murder and quantum physical philosophy.
Sami Yaffa (born Sami Lauri Takamäki September 4, 1963 in Espoo, Finland) is a bass guitarist best known for his work in New York Dolls, Michael Monroe's bands, and Hanoi Rocks.
 He is currently the bassist for the Michael Monroe band and Compulsions.
 He also plays guitar in his own band Mad Juana.
David Hewson (born 9 January 1953) is a contemporary British author of mystery novels.
 His series of mysteries, featuring police officers In Rome, led by the young detective and art lover Nic Costa, began with "A Season for the Dead", has now been contracted to run to at least nine instalments by British, American, European and Asian publishers.
 The author's debut novel, "Shanghai Thunder", was published by Robert Hale, in the United Kingdom, in 1986.
 Almost all copies of the book were sent to libraries, and it has been reissued.
Andrew James Hartley is a British-born American novelist, who writes mystery/thrillers and fantasy adventures.
 His series of children's/young adult fantasy adventures came out in later 2011.
 He used to blog regularly for the writers' site Magical Words and is a regular presenter at Thrillerfest and Dragon Con.
 His thrillers have been USA Today and New York Times bestsellers and his 5th novel, "Will Power", was listed by Kirkus Reviews as one of the 15 best fantasy/scifi books of 2010.
 The first of three middle grades/young adult adventures, "Darwen Arkwright and the Peregrine Pact", was released from Razorbill (Penguin) in October 2011.
 In 2011 he co-authored with David Hewson a novelization of Shakespeare's "Macbeth" written specially for audio and released by Audible.com in June, narrated by Alan Cumming.
 His second collaboration with Hewson – an audio novel based on "Hamlet", performed by Richard Armitage – was named Audible.com's best book of 2014 and was nominated for two Audie awards.
Paul David Hewson, OL (born 10 May 1960), known by his stage name Bono ( ), is an Irish singer-songwriter, musician, venture capitalist, businessman, and philanthropist.
 He is best known as the lead vocalist and primary lyricist of rock band U2.
David Hewson (born January 9, 1982) is a former professional Canadian football linebacker who played for the Toronto Argonauts and Winnipeg Blue Bombers of the Canadian Football League.
Horns and Halos is the ninth solo studio album by Finnish rock singer Michael Monroe.
 It was released on 23   2013 (2013--) by Spinefarm Records.
 Michael Monroe stated about the album title Horns and Halos: "We all have a bit of both within us – Yin and Yang, Devils and Angels etc.
 However – Love and Light always conquers the darkness in the end".
Richard Anthony Sayer ("Tony") Arnell (15 September 191710 April 2009) was an English composer of classical music.
 Arnell composed in all the established genres for the concert stage, and his list of works includes six completed symphonies (a seventh was realised by Martin Yates) and six string quartets.
 At the Trinity College of Music, he "promoted a pioneering interest in film scores and electronic music" and jazz.
 Electronic composer David Hewson, who worked with him on films including "Dilemma" (1981), "Doctor in the Sky" (1984), "Toulouse-Lautrec" (1986), and "The Light of the World" (1989), was one of his pupils.
Nights Are So Long is the first studio album by singer Michael Monroe, released in 1987 through Yahoo! Records; a remastered edition was reissued in 2004 through Warner Music.
 It is Monroe's first post-Hanoi Rocks release, with Yahoo! being the record label of Hanoi Rocks' then-manager Seppo Vesterinen.
 Save for three tracks written by Monroe, the rest are mainly covers; his subsequent 1989 album, "Not Fakin' It", would be the first to feature primarily original compositions.
 Monroe dedicated the album to Razzle, Hanoi Rocks' drummer, who was killed in a road accident in 1984.

Question: What occupation is shared by Michael Monroe from Finland and Paul David Hewson or Bono from Ireland?
Answer: rock musician