Question: Have musicians Matty Mullins and Ed Kowalczyk both appeared in bands?

Context articles: Ed Kowalczyk
MIGGS
Matty Mullins
Sleepwalking (Memphis May Fire album)
Live (band)
Feel (Sleeping with Sirens album)
Adam Kowalczyk
Songs from Black Mountain
Matty Mullins (album)
Awake: The Best of Live

Edward Joel Kowalczyk (born July 16, 1971) is an American musician, and a founding member of the band Live.
 After leaving Live in 2009, he launched a solo career.
 His first album, "Alive", was released worldwide in June and July 2010.
 Ed rejoined Live in December 2016.
MIGGS is an American pop/rock band formed in 2001 in San Francisco, CA by Don Miggs (vocals/guitar).
 Michael Lombardo (bass/vocals) joined in 2005, Walker Adams (drums/vocals) joined in 2011 and John Luzzi (guitar/vocals) joined in 2012.
 Over the course of a decade, the band has released five albums and toured extensively with high-profile bands such as Maroon 5, Stone Temple Pilots and Velvet Revolver's Scott Weiland, LIVE's Ed Kowalczyk, Plain White T's, Green River Ordinance, Parachute, Candlebox, and KT Tunstall.
Matty Mullins (born July 3, 1988) is an American rock musician.
 He is the lead vocalist of Dallas-based metalcore band Memphis May Fire.
Sleepwalking is the debut full-length studio album by American metalcore band Memphis May Fire.
 The album was released through Trustkill Records on July 21, 2009.
 This album is the first album to feature lead vocalist Matty Mullins after former lead vocalist Chase Ryan left the band in 2008.
 Scheduled to be released summer 2008, the release got delayed because of the line-up change.
 Mullins has described the album as "a new breed of rock 'n' roll" and musically it has "more aggressive guitar work and noticeably more melodic, but still retains that southern swagger."
Live ( , often typeset as LĪVE or +LĪVE+) is an American rock band from York, Pennsylvania, consisting of Ed Kowalczyk (lead vocals, rhythm guitar), Chad Taylor (lead guitar, backing vocals), Patrick Dahlheimer (bass), and Chad Gracey (drums).
 Kowalczyk left the band in 2009 and was replaced by Chris Shinn, but rejoined in December 2016.
Feel is the third album by American post-hardcore band Sleeping with Sirens was released by June 4, 2013.
 This is the last album released on Rise.
 The first single, "Low", was released on April 23, 2013.
 The second single, "Alone", featuring rapper MGK, was released on May 21, 2013.
 The album also features guest appearances by Fronz (Attila), Matty Mullins (Memphis May Fire) and Shayley Bourget (Dayshell, ex-Of Mice & Men).
 The entire album was produced by Cameron Mizell who had produced their debut album.
 On May 26, 2013 the entire album was streamed on the Rise Records YouTube channel.
Adam E. Kowalczyk (born September 27, 1975) is an American musician.
 He is the brother of Ed Kowalczyk, the lead singer of the band Live.
Songs from Black Mountain is Live's seventh studio album and was the last to feature vocalist Ed Kowalczyk prior to his departure from the band between 2009 and 2016.
 It was released in most countries on April 10, 2006, but was released on May 9 in Canada, May 29 in the UK and June 6 in the US.
 It was their only release through Epic Records.
 The first single, "The River", was released on March 21, 2006.
Matty Mullins is the first full-length album by American rock musician Matty Mullins which was released September 23, 2014 by Rise Records.
Awake: The Best of Live is Live's greatest hits album, released in 2004.
 The 19-track compilation includes songs from Live's first six studio albums as well as "We Deal in Dreams", an unreleased track from the "Throwing Copper" sessions, and a cover of "I Walk the Line" by Johnny Cash, recorded for the 2001 compilation "Good Rockin' Tonight – The Legacy of Sun Records".
 The deluxe edition includes a DVD containing 22 music videos and a 30-minute interview with lead singer Ed Kowalczyk.
 The liner notes were written by Kowalczyk and Ken Wilber and the cover features a still from the video for the song "Lightning Crashes".