Question: What musical instrument did Jasen Rauch play for the band he left?

Context articles: Hide/Pieces
Meltdown (Love and Death song)
Jasen Rauch
Breathe Into Me
From Water to War
Until We Have Faces
Red (band)
Death of Me
Let Go (Red song)
Lie to Me (Denial)

"Hide/Pieces" is the fifth single by the American Christian rock band Red from their debut full-length studio album "End of Silence".
 The song was written by Anthony Armstrong, Rob Graves, Jasen Rauch and Bernie Herms.
 The song was released on November 12, 2007, although it was sent to all the fans who submitted their faces as part of the hype for the new album on June 6, 2006.
"Meltdown" is the third single from "Between Here & Lost", the debut studio album from heavy metal band Love and Death.
 The song (along with "The Abandoning") is to be remixed by Jasen Rauch in preparation for the September 24, 2013 re-release of "Between Here & Lost" as a "deluxe" edition containing a new song entitled "Empty".
 The song peaked at No. 14 on US Christ Rock, with a music video of the song released on August 13, 2013.
Jasen Rauch ( ) (born April 24, 1981) is an American producer, composer, musician, and writer, best known as the former lead guitarist and current lead guitarist of the alternative rock bands Red and Breaking Benjamin, respectively.
 Although no longer an active member of Red, he still writes music for the band.
 Rauch is also well-known as the producer for Korn guitarist Brian Welch's solo project, Love and Death.
 According to Welch, Rauch "has a great track record for recording, producing, writing, and being in a band", and credits him as an inspiration for his returning to music.
 Before joining Breaking Benjamin in late 2014, Rauch also co-wrote several songs on their 2009 "Dear Agony" album, including "I Will Not Bow" and "Lights Out".
 Rauch is also a writer for Razor & Tie Music Publishing.
"Breathe Into Me" is the first single by the American Christian rock band Red on their debut full-length studio album "End of Silence".
 The song was written by Anthony Armstrong, Rob Graves, Jasen Rauch and Jason McArthur.
 The song was released on June 6, 2006, although it was sent to all the fans who submitted their faces as part of the hype for the new album on June 6, 2006.
From Water to War is the third studio album by the American Christian rock band Nine Lashes.
 The album was released on January 21, 2014, through Tooth & Nail Records.
 It was produced by Jasen Rauch and Aaron Sprinkle.
Until We Have Faces is the third full-length studio album from American Christian rock band Red.
 It was released on February 1, 2011 by Sony Records and is the first album the band released with four members, due to the absence of Jasen Rauch (although Rauch still contributes song-writing).
Red (also stylized R3D or RED) is an American rock band from Nashville, Tennessee, formed in 2002 by brothers guitarist Anthony Armstrong and bassist Randy Armstrong, with lead vocalist Michael Barnes.
 The band's first lineup also consisted of gutiarist Andrew Hendrix and drummer Jasen Rauch.
 Since 2014, the band's line-up has consisted of the core trio of the Armstrongs and Barnes with touring drummer Dan Johnson.
"Death of Me" is the third single by Christian rock band Red from their second album, "Innocence & Instinct".
 The single was released to Christian radio on December 18, 2008.
 The song was written by producer Rob Graves and then-guitarist Jasen Rauch.
"Let Go" is the third single by the American Christian rock band Red on their debut full-length studio album "End of Silence".
 The song was written by Rob Graves, Jasen Rauch and Jason McArthur.
"Lie to Me (Denial)" (written as "Denial (Lie to Me)" on "Who We Are: The RED Anthology") is the fourth single by the American Christian rock band Red on their third full-length studio album "Until We Have Faces".
 The song was written by Anthony Armstrong, Joe Rickard, Rob Graves, Jasen Rauch, and Mark Holman.