Question: Are Matt Skiba and Johnny Dean both musicians?

Context paragraphs:
Teenage Time Killers: Teenage Time Killers is a rock supergroup formed in February 2014 by My Ruin guitarist Mick Murphy and Corrosion of Conformity drummer Reed Mullin.  Guests include Dave Grohl (former drummer of Nirvana and current lead singer of the Foo Fighters), Stephen O'Malley (of Sunn O))) and Burning Witch), Corey Taylor (lead vocalist of Slipknot and founder of Stone Sour), Nick Oliveri (former bassist for Queens of the Stone Age, currently with The Dwarves), Jello Biafra (former front man of Dead Kennedys, currently with The Guantanamo School Of Medicine), Matt Skiba (vocalist and guitarist of Alkaline Trio and current guitarist and vocalist for Blink-182) and Randy Blythe (lead vocalist of Lamb of God).  The band's name refers to the Rudimentary Peni song of the same name.  Their debut album, titled "Teenage Time Killers: Greatest Hits Vol.  1", was recorded at Grohl's Studio 606, and was released July 28, 2015.  through Rise Records, with whom the group signed in December 2014.  The album contains a version of John Cleese's poem "Ode to Hannity," sung by Biafra.  Mullin has stated that he isn't sure whether the group will tour, but that they are considering a live appearance on a show such as "Jimmy Kimmel Live! ", possibly with "three or four singers [coming] out at a time".

Jarrod Alexander: Jarrod Alexander is an American drummer, who has played with many hardcore punk bands.  Alexander drummed for the bands The Suicide File, A Static Lullaby, Dead Country, and more recently, My Chemical Romance and Matt Skiba & The Sekrets.

We Are Pirates Tour: The We Are Pirates Tour is a concert tour by American rock band Blink-182 in support of the group's seventh studio album, "California" (2016).  It consisted of festival and amphitheater dates and ran between May 14 and July 10, 2016 in North America.  Support acts included All Time Low, Hawthorne Heights, Simple Plan, and the Used on select dates.  Aside from the few club shows and the Musink Festival in 2015, the We Are Pirates tour was their first with guitarist and vocalist Matt Skiba and their first without founding member Tom DeLonge.

Bored to Death (song): "Bored to Death" is a song recorded by American pop punk band Blink-182 for the group's seventh studio album, "California" (2016).  The song was released as the lead single from "California" on April 27, 2016 through BMG.  "Bored To Death" was written by the band's bassist and vocalist Mark Hoppus, drummer Travis Barker, guitarist and vocalist Matt Skiba, and producer John Feldmann.  It is Skiba's first single with the band, and the first single to not feature original guitarist and vocalist Tom DeLonge.  The song was among the very first written for "California", and was begun on the first day writing with Feldmann.

Johnny Dean: Johnny Dean; born John Hutchinson Dean; (12 December 1971) is a British musician, front man and iconic pin-up of the '90s Britpop era.

California (Blink-182 album): California is the seventh studio album by the American rock band Blink-182, released on July 1, 2016 through BMG.  Produced by John Feldmann, it is the first album by the band to feature vocalist/guitarist Matt Skiba, who replaced former member Tom DeLonge.  After touring and releasing the band's sixth album "Neighborhoods" (2011), it became difficult for the trio to record new material, due to DeLonge's various projects.  After disagreements, the remaining members of the group—vocalist/bassist Mark Hoppus and drummer Travis Barker—sought separation from DeLonge and recruited Skiba, best known as the frontman of rock band Alkaline Trio, in his place.

Matt Skiba: Matthew Thomas "Matt" Skiba (born February 24, 1976) is an American musician, singer and songwriter known for his role as the co-lead vocalist and guitarist of the bands Alkaline Trio and Blink-182.  Skiba began performing with Blink-182 in March 2015 following the second departure of founding guitarist and vocalist Tom DeLonge and later became an official member in July 2015; he appears on the band's seventh album, "California", which was released on July 1, 2016, as well as the deluxe edition of the album, which was released on May 19, 2017.  Skiba has also recorded and performed solo and with his side-projects, Heavens and The Hell.  In 2012, he released a solo album, "Babylon", with his backing band The Sekrets.  A second album, "Kuts", was released on June 1, 2015.

Demos (Matt Skiba album): Demos is the first full-length album by Alkaline Trio singer/guitarist Matt Skiba.  It is composed of demos that Skiba has recorded into his computer.  Skiba released the project on Asian Man Records, which was Alkaline Trio's label for their first two full-length albums, "Goddamnit" and "Maybe I'll Catch Fire".  Four of the songs from this release, namely "Angel of Deaf," "Haven't You," "How The Hell Did We Get Here," and "Nausea (Cruel and Unusual)," were later rerecorded and released on "Babylon", Skiba's first album with his band The Sekrets.  On that release, however, "Nausea (Cruel and Unusual)" underwent lyrical alterations and was renamed "Olivia."

Alkaline Trio: Alkaline Trio is an American alternative rock band from McHenry, Illinois.  The band consists of guitarist and vocalist Matt Skiba, bassist and vocalist Dan Andriano, and drummer Derek Grant.  Founded in late 1996 by Skiba, bassist Rob Doran, and drummer Glenn Porter, Alkaline Trio released its debut single, "Sundials", in 1997.  Following its release, Doran departed from the band and was replaced by Andriano.  The band subsequently recorded an EP, "For Your Lungs Only" (1998), and its debut studio album, "Goddamnit" (1998).  Following the release of the band's second album, "Maybe I'll Catch Fire" (2000), Porter left the band and was replaced by Mike Felumlee for its subsequent album, "From Here to Infirmary" (2001).

Glenn Porter: Glenn Porter (born 1975) is an American drummer from Chicago, Illinois most famous for forming Alkaline Trio with fellow bike messenger Matt Skiba and Rob Doran, which he later left in 2000 after recording two albums with them.  He is also a former 88 Fingers Louie member.  Prior to drumming for 88 Fingers Louie, Porter drummed for a band called Tommyrot.  He has also been credited as a sound mixer for two films.

Supporting paragraphs: Matt Skiba Johnny Dean
Answer: yes