question: Are Mark Wystrach and Mike Ness both singers?
answer: yes
context: Title: List of Social Distortion band members
  Passage: Social Distortion is an American punk rock band which currently consists of vocalist and guitarist Mike Ness, guitarist Jonny "2 Bags" Wickersham, bassist Brent Harding and drummer David Hidalgo Jr..  The band was formed in Fullerton, California in 1978, and originally comprised Ness, Rikk Agnew and his brother Frank on guitar, Casey Royer on drums, Tom Corvin on vocals and Mark Garrett on bass.  The first lineup change took place in 1979, when Garrett was replaced by Dennis Danell, who had known Ness for years.
  Title: Under the Influences
  Passage: Under the Influences, the second (and most recent) solo album from Social Distortion's Mike Ness, is a compilation of country, rock, and bluegrass covers released just six months after his first solo effort, "Cheating at Solitaire".  As the title implies, Ness intends the album to be an illustration of the music that shaped him.  Songs as diverse as "I Fought the Law" and "Wildwood Flower" make their appearance, each with Mike Ness's unique spin.  Included is a honky tonk version of Social Distortion staple, "Ball and Chain".
  Title: D.I. (band)
  Passage: D.I. is a Southern California punk band featuring ex-Adolescents and Social Distortion drummer Casey Royer on vocals.  Royer formed the band after he and former Social Distortion original member Rikk Agnew (also formerly of Christian Death), left the original Mike Ness Social Distortion crew.
  Title: Midland (band)
  Passage: Midland is an American country music group consisting of Mark Wystrach (lead vocals), Cameron Duddy (bass guitar, background vocals), and Jess Carson (lead guitar, background vocals).  Their debut single, "Drinkin' Problem", reached the top 5 on the "Billboard" Country Airplay chart.  The album's second single, "Make a Little" released to country radio on September 25, 2017.
  Title: Cheating at Solitaire
  Passage: Cheating at Solitaire is the first solo album from Social Distortion frontman Mike Ness.  Released in 1999, it bypasses much of Social Distortion's punk muscle in favor of a more roots-oriented approach to rock and roll.  It features cameos by Bruce Springsteen, Brian Setzer, and members of Royal Crown Revue.  Johnny Cash was invited to perform on the song "Ballad of a Lonely Man", but was too ill to record at the time.
  Title: Mike Ness
  Passage: Michael James Ness (born April 3, 1962) is an American guitarist, vocalist, producer and chief songwriter for the punk rock band Social Distortion, which was formed in 1978.  Mike Ness' songs are represented by Downtown Music Publishing.
  Title: Mark Wystrach
  Passage: Mark Wystrach (born December 17, 1979) is an American actor and country music singer.
  Title: Wild in the Streets (Circle Jerks album)
  Passage: Wild in the Streets is the second studio album by the hardcore punk band Circle Jerks.  It was originally released on March 4, 1982 through Faulty Products, a sub-label of I.R.S. Records.  In 1988, the album was remixed and reissued on Frontier Records.  The title track is a cover song of the Garland Jeffreys song of the same name.  Mike Ness of Social Distortion can be seen on the cover of the album; running wild in the streets.
citations: Mike Ness Mark Wystrach