Question: Are Mark Farner and Randy Owen singers?

Context articles: Double Live (Butthole Surfers album)
Mark Farner
We're an American Band (song)
Bad Time
Mark, Don &amp; Terry 1966–67
Terry Knight and the Pack (album)
I'm Your Captain (Closer to Home)
One on One (Randy Owen album)
Walk Like a Man (Grand Funk Railroad song)
Randy Owen

Double Live is a live double album by American punk band Butthole Surfers, released on vinyl and cassette tape in 1989.
 An expanded CD edition followed in 1990.
 All songs were written by Butthole Surfers, except: "The One I Love," written by Bill Berry, Peter Buck, Mike Mills, and Michael Stipe of R.E.M.; "Paranoid," written by Mark Farner of Grand Funk Railroad; "No Rule," written by Jonas Almqvist of Leather Nun; and "Kuntz," a distorted version of "The Fear (กลัวดวง)" ( written by Kong Katkamngae and performed by Phloen Phromdade, two Thai artists.
Mark Fredrick Farner (born September 29, 1948) is an American singer, guitarist and songwriter, best known as the lead singer and lead guitarist for Grand Funk Railroad, and later as a contemporary Christian musician.
"We're an American Band" (from the album of the same name) became Grand Funk Railroad's first #1 single on September 29, 1973, Mark Farner's 25th birthday.
 Written by Don Brewer and produced by Todd Rundgren, its huge chart success broadened Grand Funk's appeal.
 It was sung by Brewer rather than Farner, who usually took lead vocals.
"Bad Time" is a song written by Mark Farner and performed by Grand Funk.
 The song reached #4 on the "Billboard Hot 100" on 7–14 June 1975.
 The song appeared on the band's 1974 album, "All the Girls in the World Beware!!!
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Mark, Don & Terry 1966–67 is a 1972 2-LP set compilation album by the American garage rock band Terry Knight and the Pack released on ABKCO Records in an effort to cash in on the March 1972 Capitol Records album "" by Grand Funk Railroad.
 The album has a plain blue cover with lettering similar to that of the plain black cover of the earlier Grand Funk Railroad release.
 Mark Farner and Don Brewer from Grand Funk had been in Terry Knight and The Pack with Terry Knight, who then managed them until 1972.
 Knight also managed the Ft. Worth Texas group Bloodrock until mid 1971.
Terry Knight and the Pack was the debut album for the American garage rock band, Terry Knight and the Pack.
 On this record, future Grand Funk Railroad alumni such as Mark Farner, appear.
 Vocalist Terry Knight wrote the bulk of the 12 tracks, barring the four cover versions.
"I'm Your Captain (Closer to Home)" is a 1970 song written by American musician Mark Farner and recorded by Grand Funk Railroad as the closing track to their album "Closer to Home".
 Ten minutes in duration, it is the band's longest studio recording.
 One of the group's best-known songs, it is composed as two distinct but closely related movements.
 Its title has been rendered in various ways across many different Grand Funk albums, including "I'm Your Captain", "I'm Your Captain/Closer to Home", "Closer to Home/I'm Your Captain", "Closer to Home (I'm Your Captain)", and "Closer to Home".
One on One is the only solo studio album from former Alabama lead singer Randy Owen.
 The album was released on Broken Bow Records on November 4, 2008.
 The album has produced two charted singles on the Hot Country Songs chart.
 The first of these, "Braid My Hair", reached number 45 in mid-2008 under the promotion of DMP Records.
 "Like I Never Broke Her Heart", the second single, debuted in late 2008 and peaked at 41.
 "Holding Everything", a duet with fiddler Megan Mullins, was the third and final single, although it did not chart.
 John Rich of Big & Rich produced the album.
 This album would become Randy Owen's only solo album to be recorded under his name until he rejoined and reunited with his bandmates to reform Alabama in 2010.
"Walk Like a Man" is a song written by Don Brewer and Mark Farner and performed by Grand Funk.
 It reached #16 in Canada and #19 on the "Billboard" Hot 100 in 1974.
 It was featured on their 1973 album, "We're an American Band".
Randy Yeuell Owen (born December 13, 1949) is an American country music artist.
 He is best known for his role as the lead singer of Alabama, a country rock band which saw tremendous mainstream success throughout the 1980s and 1990s.
 Alabama became, undoubtedly, the most successful band in the history of country music, releasing over 20 gold and platinum records, dozens of #1-ranked singles, and selling over 75 million records during their career.
 Although Alabama currently only records new albums on occasion, Owen himself has maintained a career in country music as a solo performer.
 He released his solo debut "One on One" in late 2008 and charted two singles from it.