Question: What role within their respective bands did John Rzeznik and Marty Raybon share?

Context paragraphs:
If Bubba Can Dance (I Can Too): "If Bubba Can Dance (I Can Too)" is a song recorded by American country music group Shenandoah.  It was written by Shenandoah drummer, Mike McGuire and lead singer Marty Raybon along with veteran Nashville writer Bob McDill.  It was released in February 1994 as the third single from their album "Under the Kudzu".  It was a Number One hit in both the United States and Canada.

Under the Kudzu: Under the Kudzu is the fifth studio album released by country music group Shenandoah.  Released in 1993, It produced their fifth and last number one hit to date with "If Bubba Can Dance (I Can Too)" co-written by band members Marty Raybon, Mike McGuire and Bob McDill.  Other singles included "Janie Baker's Love Slave", "I Want to Be Loved Like That", and "I'll Go Down Loving You".  They charted at #15, #3 and #46, respectively.  It is also the second and final album for the RCA Nashville label.

Shenandoah (band): Shenandoah is an American country music group founded in Muscle Shoals, Alabama in 1984 by Marty Raybon (lead vocals, acoustic guitar), Ralph Ezell (bass guitar, backing vocals), Stan Thorn (keyboards, backing vocals), Jim Seales (lead guitar, backing vocals), and Mike McGuire (drums, background vocals).  Thorn and Ezell left the band in the mid-1990s, with Rocky Thacker taking over on bass guitar; Keyboardist Stan Munsey joined the line up in 1995.  The band split up in 1997 after Raybon left.  Seales, Munsey, Thacker and McGuire reformed the band in 2000 with lead singer Brent Lamb, who was in turn replaced by Curtis Wright and then by Jimmy Yeary.  Ezell rejoined in the early 2000s, and after his 2007 death, he was replaced by Mike Folsom.  Raybon returned to the band in 2014.  That same year, Jamie Michael replaced the retiring Jim Seales on lead guitar.

Marty Raybon: Marty Raybon (born December 8, 1959) is an American country music artist.  He is known primarily for his role as the lead singer of the band Shenandoah, a role which he held from 1985 to 1997, until he rejoined the band in 2014.  He recorded his first solo album, "Marty Raybon", in 1995 on Sparrow Records.  Before leaving Shenandoah in 1997, he and his brother Tim formed a duo known as the Raybon Brothers, which had crossover success that year with the hit single "Butterfly Kisses".

Something for the Rest of Us: Something for the Rest of Us is the ninth studio album by American rock band Goo Goo Dolls.  It was released on August 28, 2010 in Australia and on August 31 in North America through Warner Bros.  Records.  The recording process took place during the spring to fall of 2009 in the GCR Audio studio in Buffalo and Paramount Studios as well as "the Ark" in Los Angeles, with producer Tim Palmer.  A single had been originally slated to be released in November 2009 with an album release in February 2010, but the band went back into the studio in January 2010.  According to lead singer and guitarist John Rzeznik, this was done to make further improvements on what they had previously thought had been a finished record.  Several producers were brought in to assist on the production process, including Butch Vig, John Fields, Paul David Hager and Rob Cavallo.  "Something for the Rest of Us" is the third Goo Goo Dolls studio album that Cavallo has produced ("Dizzy Up the Girl" and "Gutterflower").  When asked about the length of time between albums, Rzeznik admitted it was a mix of songwriting issues as well as taking time out for personal reasons; "I wanted to really dig deep and there are a million songs I threw away, like, “Nah, it's not good enough.  I wanna do something different.  I wanna do something better, go deeper.  I also wanted to have a life with my girlfriend for a while.  I owed it to her to spend some time with her and be normal and be in one place.  That was kind of important."  In one of the Ustream sessions, Robby revealed that the album would have twelve songs and "Real" is not among them.  In late May, John announced that "Home" would be the first single and was released onto radio and iTunes stores on June 8, 2010.

Jed (album): Jed is the second studio album by American rock band Goo Goo Dolls.  It is the first studio album in which John Rzeznik sang vocals for some of the tracks.  The majority of the songs are sung by Robby Takac, with Rzeznik taking over for two ("Up Yours" and "James Dean").  Fellow Western New York native Lance Diamond sings vocals on track seven, "Down On The Corner."  The second track on the album, "Up Yours", was the only song from "Jed" found on the band's compilation album "What I Learned About Ego, Opinion, Art & Commerce".  The song "No Way Out" was also included on the band's most recent compilation album "Volume Two", which consisted of other album tracks, b-sides and rarities.  The album was re-released on CD on February 22, 1994.

Raybon Brothers: The Raybon Brothers was a country duo from Sanford, Florida consisting of brothers Marty Raybon and Tim Raybon.  Prior to the duo's inception in 1997, Marty Raybon was the lead singer of the country music band Shenandoah, having left in 1997, before rejoining in 2014.

Stan Munsey: Stan E. Munsey (born July 10, 1955) is an American songwriter and one of several writer-musicians to emerge from the Muscle Shoals, Alabama music scene.  Munsey was born in Easton, Pennsylvania and spent a significant amount time during his early years in Sheffield, Alabama.  He is noted as a musician and songwriter, with songs on major recordings that have sold more than 12 million worldwide.  He has penned tunes for Alabama, Shenandoah, The Statler Brothers, Glen Campbell, Shania Twain, Tim McGraw, The Kinleys, Butch Baker, Lorrie Morgan, Suzy Bogguss, Barbara Mandrell, Lee Greenwood, Jonathan Edwards, Mel McDaniel, Charly McClain, Wayne Massey, Ty Herndon, Collin Raye, John Michael Montgomery, Marty Raybon, and Marie Osmond.

I'm Still Here (Jim's Theme): "I'm Still Here (Jim's Theme)" is a song written by the Goo Goo Dolls frontman John Rzeznik for Disney's animated film "Treasure Planet".  The song is in the key of A Major and was released by Rzeznik as a single away from The Goo Goo Dolls.  It was a moderately successful pop hit.

John Rzeznik: John Joseph Theodore Rzeznik ( ; born December 5, 1965) is an American musician, singer-songwriter, and producer.  He is best known as the guitarist and frontman of the rock band the Goo Goo Dolls, of which he is a founding member and with whom he has recorded eleven studio albums.

Supporting paragraphs: John Rzeznik Marty Raybon
Answer: singer