Question: Are JB and Andy Cairns both singer-songwriters?

Context articles: Andy Cairns
Four More Raga Moods
JB (South Korean singer)
Joyrider (band)
Therapy?
48 Cameras
Andy Cairns solo discography
The Brilliant Mistakes

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.
Four More Raga Moods is an album by Ashtray Navigations, released in 2006 on the Ikuisuus label.
 The album features guest appearances from Alex Neilson, Ben Reynolds, Mel Delaney, Chris Hladowski, Matt Cairns, Andy Jarvis and Pete Nolan (of Magik Markers).
Lim Jae-beom (Hangul: 임재범; born January 6, 1994) commonly known by his stage name JB (Hangul: 제이비), is a South Korean singer, songwriter and actor.
 He is a member of South Korean boyband Got7, and part of the duo JJ Project.
 JB made his small-screen debut through the drama series "Dream High 2" in 2012.
 He has also starred in MBC's "When a Man Falls in Love" as Seo-Min Joon.
Joyrider were a rock band from Portadown, Northern Ireland.
 The band consisted of Phil Woolsey (guitar, vocals), Cliff Mitchell (guitar), Simon Haddock (bass) and Keith Irwin, Buc Hamill / Carl Alty (drums).
 Joyrider initially signed to Andy Cairns' Blunt record label, but after releasing their first two EPs signed a recording contract with Paradox Records.
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.
48 Cameras, often referred simply as 48C, is a musical and international collective in a format that varies according to circumstances.
 It was created in 1984 by both musicians and non-musicians (the line-up varies greatly), some currently living in Belgium, Netherlands, United Kingdom, etc.
 To this day, 48 Cameras recorded 13 albums, the work being done frequently via the Internet (some of the members have never met), allowing the collective to welcome various guests from diverse cultures and a wide range of disciplines : Annemarie Borg (Antara Project), Rodolphe Burger, Andy Cairns (Therapy?
), David Coulter, Michel Delville, Sandy Dillon, Michael Gira, Marcel Kanche, Tom Heasley, Gerard Malanga, Martyn Bates, (Eyeless in Gaza), DJ Olive, Charlemagne Palestine, Philippe Poirier, Nicholas Royle, Eugène Savitzkaya, Robin Rimbaud (Scanner), Malka Spiegel, Vesica Piscis, Aaron Ximm, etc.
 The music created has interestingly been described as being alternative, ambient, art rock, dark, folk, industrial or even psychedelic.
 Rightly or wrongly, the collective has been compared to bands as Coil, Psychic TV or Current 93.
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.
The Brilliant Mistakes is an American rock band based in New York City known for their eclectic mix of pop, rock, folk and soul styles.
 The critically acclaimed group was formed in 1994 by singer-songwriters Alan Walker, a New Yorker, and Erik Philbrook, a transplant from Bangor, Maine, who met while working together at Penguin Books in Manhattan.
 The band’s moniker comes from a song on Elvis Costello’s "King of America" album.
 Other original members of the group included drummer Mickey Wood and guitarist Andy Resnick.
 Drummer Paul Mauceri replaced Wood in 2000.
 The group also alternated guitarists, including Cameron Greider, John Putnam, Greg Beshers and Keith Tasker, to record and perform.
 The Brilliant Mistakes have self-released three full-length studio albums and one EP.