Question: Joe Jonas and Jimmy Gestapo, share which mutual occupation?

Context paragraphs:
Pom Poms (song): "Pom Poms" is a song recorded by American pop rock band the Jonas Brothers.  It was written by Nick Jonas, Joe Jonas, Kevin Jonas and Paul Phamous.  The song was released as the lead single from their now-cancelled fifth studio album on April 2, 2013 by Jonas Enterprises.  It is the first single not to be released by the trio under their previous label, Hollywood Records.

La La Land (Demi Lovato song): "La La Land" is a song recorded by American singer Demi Lovato.  It was written by Lovato, Joe Jonas, Nick Jonas and Kevin Jonas and produced by the Jonas Brothers alongside John Fields, for Lovato's debut studio album, "Don't Forget" (2008).  It was released as the album's second single on April 10, 2009, through Hollywood Records.  "La La Land" is one of six songs on the album co-written by the Jonas Brothers, who also contributed backing vocals and guitars to the track.  Lovato said that she wrote the song about being yourself in Hollywood and not letting other people change who you are.  Musically, the song is a guitar-driven pop rock song and the lyrics speak of Lovato feeling "out of place" in Hollywood.

Love Is on Its Way: "Love Is on Its Way" is a song by American pop rock band the Jonas Brothers for their first soundtrack album "Music from the 3D Concert Experience" (2009).  It was written by Kevin Jonas Sr., and band members Nick Jonas, Joe Jonas and Kevin Jonas.  The song is a pop track.  "Love Is on Its Way" received generally favorable reviews from contemporary music critics, who complemented its overall production.  Despite not having been released as a single, it peaked at number 84 on the U.S. "Billboard" Hot 100.

Shelf (song): "Shelf" is a song by American pop rock group Jonas Brothers from their third studio album "A Little Bit Longer" (2008).  It was written by Kevin Jonas, Joe Jonas and Nick Jonas, with production helmed by Jon Fields.

Fastlife: Fastlife is the debut studio album by American recording artist Joe Jonas.  The album was first released in the Netherlands on October 7, 2011 through Hollywood Records.  "Fastlife" serves as Jonas' first album outside of his band Jonas Brothers, which announced an indefinite hiatus one year prior to its release.  Jonas hoped to create a more mature and "electric" sound for the album, a contrast from the pop-rock releases with his band.  To achieve this goal, Jonas worked with a range of urban producers such as Danja and Chris Brown, among others.  "Fastlife" lyrically speaks of topics such as love, sex, and breakups.  Jonas received co-writer credits for seven songs on the album.

Jimmy Gestapo: James Drescher (born December 10, 1960), better known as Jimmy G or Jimmy Gestapo and also known as Jimmy Spliff, is the lead singer for New York based hardcore punk band Murphy's Law.

Joe Jonas &amp; Jay Sean Tour: The Joe Jonas & Jay Sean Tour was the first co-headlining tour by American singer Joe Jonas & British singer-songwriter Jay Sean in support of their respective studio albums "Fastlife" and "Freeze Time".  The 19-city intimate club trek kicked off in Boston on September 6 and stopped in major cities across North America including New York, Los Angeles, Chicago, Toronto, and San Francisco.  The tour kicked off September 6 in Boston before wrapping up on October 6 in New York.

Joe Jonas: Joseph Adam "Joe" Jonas (born August 15, 1989) is an American singer and actor.  Jonas first rose to fame as a member of the pop-rock band Jonas Brothers, along with his brothers Kevin and Nick.  The band's debut album, "It's About Time" (2006), was a commercial failure following a limited release.  The group signed with Hollywood Records, and in 2007 released their eponymous second studio album.  The album went on to be a commercial success for the group, selling over two million copies in the United States alone.  The group became heavily involved with the Disney Channel and later made their film debut in the Disney Channel Original Movie "Camp Rock" (2008).  The film and its soundtrack became a major hit for the network and helped propel the brothers into further commercial success.  Their third studio album, "A Little Bit Longer" (2008), became their first to top the "Billboard" 200 and went on to become their highest selling album to date.  The album's lead single became a top five hit in the United States.  Their fourth studio album, "Lines, Vines and Trying Times" (2009) became their second to top the charts in the United States.  The brothers also starred in two of their Disney Channel series from 2009 to 2010, being "JONAS L.A." and "".  In 2010, the group starred in "", reprising their roles from the original film.

Get Back (Demi Lovato song): "Get Back" is a song performed by American singer Demi Lovato.  It was written by Lovato, Joe Jonas, Nick Jonas and Kevin Jonas and produced by the Jonas Brothers alongside John Fields, for Lovato's debut studio album, "Don't Forget".  The song features Jack Lawless on drums and John Taylor and the Jonas Brothers on guitars.  The initial writing of the song took place when Lovato wanted to write a song about getting back together with an old boyfriend, as opposed to writing mean or heartbroken songs.  "Get Back" was released as the album's lead single on August 12, 2008, by Hollywood Records.  Musically, the song is an upbeat rock song with a guitar-driven sound.

Pushin' Me Away: "Pushin' Me Away" is a song by American pop rock band the Jonas Brothers for their third studio album "A Little Bit Longer" (2008).  It was written by band members Nick Jonas, Joe Jonas and Kevin Jonas; production was helmed by John Fields.  The song is a pop rock and teen pop influenced track.  "Pushin' Me Away" received generally favorable reviews from contemporary music critics, who complimented its overall production.  Despite not having been released as a single, it peaked at number 16 on the U.S. "Billboard" Hot 100.

Supporting paragraphs: Joe Jonas Jimmy Gestapo
Answer: singer