Question: Are both Andy Cairns and George Thorogood considered musicians?

Context articles: Andy Cairns solo discography
Nadine (album)
Better Than the Rest
George Thorogood
Therapy?
Willie and the Hand Jive
George Thorogood and the Destroyers (album)
2120 South Michigan Ave.
More George Thorogood and The Destroyers
Andy Cairns

The following is a list of solo albums by Therapy?
 frontman Andy Cairns.
 These albums were recorded exclusively for sale on Andy Cairns' solo acoustic tours in 2013 and 2014, and were not intended for general sale.
Nadine is an album by George Thorogood and the Destroyers.
 Although it was marketed as a new release in 1986, "Nadine" is actually a repackaged version of the 1979 vinyl album "Better Than the Rest" that was reissued on compact disc.
 The songs on "Nadine" were Thorogood's first recordings, which were made in 1974.
Better Than the Rest is the third album (mini-album) of songs by George Thorogood and the Destroyers, recorded in 1974 and released in 1979.
 At the time the songs were recorded, Thorogood was an unknown artist who was not signed to a record label.
 In 1979, after Thorogood had released his first two official albums on Rounder Records, "Better Than The Rest" was released by MCA.
 In 1986, the songs from this album were released on compact disc with the title "Nadine" using a different track order.
George Thorogood (born February 24, 1950) is an American musician, singer and songwriter from Wilmington, Delaware.
 His "high-energy boogie-blues" sound became a staple of 1980s rock radio, with hits like his original songs "Bad to the Bone" and "I Drink Alone".
 He has also helped popularize older songs by American icons, such as "Move It on Over", "Who Do You Love?
", and "House Rent Boogie/One Bourbon, One Scotch, One Beer", which became staples of classic rock radio.
Therapy?
 are an alternative metal band from Northern Ireland.
 The band was formed in 1989 by guitarist–vocalist Andy Cairns from Ballyclare and drummer-vocalist Fyfe Ewing from Larne, Northern Ireland.
 The band initially recorded their first demo with Cairns filling in on bass guitar.
 To complete the lineup, the band recruited Larne bassist Michael McKeegan.
 The band signed with major label A&M Records in 1992 and released most notably Troublegum in 1994 and Infernal Love in 1995.
 Ewing's departure in early 1996 preceded the arrivals of his replacement Graham Hopkins and Martin McCarrick on cello and guitar.
 Neil Cooper replaced Hopkins on drums in 2002.
 Following the departure of McCarrick in 2004, the band has remained a stable three piece since.
"Willie and the Hand Jive" is a song written by Johnny Otis and originally released as a single in 1958 by Johnny Otis Show, reaching #9 on the "Billboard" Hot 100 chart and #5 on the Billboard R&B chart.
 The song has a Bo Diddley beat and was partly inspired by the music sung by a chain gang Otis heard while he was touring.
 The lyrics are about a man who became famous for doing a dance with his hands, but the song has been accused of glorifying masturbation.
 It has since been covered by numerous artists, including The Strangeloves, Eric Clapton, Cliff Richard, Kim Carnes, George Thorogood and The Grateful Dead.
 Clapton's 1974 version was also released as a single and also reached the Billboard Top 40, peaking at #26.
 Thorogood's 1985 version reached #25 on the Hot Mainstream Rock Tracks chart.
George Thorogood and the Destroyers is the self-titled debut album by American blues rock band George Thorogood and the Destroyers, released in 1977.
 Consisting mostly of covers of blues hits, it included a medley of John Lee Hooker's "House Rent Boogie" and "One Bourbon, One Scotch, One Beer", the latter a song written by Rudy Toombs for Amos Milburn, and later covered by Hooker.
2120 South Michigan Ave. is the fifteenth studio album by George Thorogood and the Destroyers.
 It was released on June 14, 2011 on the Capitol Records label.
 The album peaked at #2 on the "Billboard" Top Blues Albums chart.
 The title refers to the address of the offices and recording studios of Chess Records in Chicago.
 The album contains ten covers of songs recorded on Chess Records by artists such as Chuck Berry, Bo Diddley, Willie Dixon, and Muddy Waters; plus a cover of The Rolling Stones' instrumental "2120 South Michigan Avenue" and two original songs about Chess Records artists.
 Capitol Records approached Thorogood with the idea for the album and selected most of the songs.
 Buddy Guy and Charlie Musselwhite perform on the album, although their work was added after primary recording was complete.
More George Thorogood and the Destroyers is the fourth album by George Thorogood and The Destroyers, released in 1980.
 An alternate name for the album is I'm Wanted.
Andrew James Cairns (born 22 September 1965, in Ballyclare, Northern Ireland), is a founding member, singer, guitarist, and songwriter for Therapy?
, a punk rock/alternative metal band from Northern Ireland.