Question: What type of musical profession does Toshiko Koshijima and Rob Swire have in common?

Context paragraphs:
World of Fantasy (album): World of Fantasy is the twelfth studio album by the Japanese electronica band Capsule, released on May 25, 2011, in Japan.  The album was originally due for release with the title of "Killer Wave".  After the 2011 Tōhoku earthquake occurred on March 11, 2011, Yasutaka Nakata announced that the album's release (which was previously announced as March 23, 2011) was postponed and due for release at an unknown date for cover art rework and renaming.  "Killer Wave" was then considered a "working title".  This is the only album of the duo with all songs sung by the vocalist Toshiko Koshijima.  It is also their first completely English-language album.

Rob Swire: Robert Swire-Thompson (born 5 November 1982) is an Australian singer, songwriter, musician, record producer and DJ, best known as the founder and vocalist of Australian/British drum and bass/electronic rock band Pendulum, as well as DJ and co-founder of electronic dance music duo Knife Party formed of Swire and Gareth McGrillen.  Originally from Perth, Western Australia, he relocated to the United Kingdom in 2003 with fellow Pendulum co-founders Gareth McGrillen and Paul "El Hornet" Harding.  Swire has since fulfilled a broad spectrum of roles as a member of Pendulum, ranging from song writing to singing while performing live with an unusual guitar-like MIDI controller – Starr Labs' Ztar Z6S-XPA.  Swire can also play guitar, bass, keyboards and percussion.  He is sometimes referred to by the stage name Anscenic.

Stereo Worxxx: Stereo Worxxx (sometimes titled as Stereo Works) is the thirteenth studio album by electronica band Capsule.  It was released on March 7, 2012, by Yamaha.  Produced, composed and written by Capsule member Yasutaka Nakata, "Stereo Worxxx" was the duo's last album with their label Yamaha until transferring with Warner Music Japan and Nakata's own label, Unborde.  Musically, "Stereo Worxxx" focuses on electronic dance music and house music with Capsule member Toshiko Koshijima singing on all tracks apart from "Motor Force".

Capsule (band): Capsule (カプセル , Kapuseru ) is a Japanese electronica band consisting of record producer Yasutaka Nakata and vocalist Toshiko Koshijima.

The Toshiko–Mariano Quartet: The jazz album The Toshiko–Mariano Quartet featuring Toshiko Akiyoshi (then Toshiko Mariano) on piano and Charlie Mariano on alto saxophone was recorded in New York in 1960 and released on the Candid label.  This Candid recording is not to be confused with 1963's similarly titled "Toshiko–Mariano Quartet", a recording of mostly Leonard Bernstein songs from the musical "West Side Story", released on the Takt (Nippon Columbia) label.

Cutie Cinema Replay: Cutie Cinema Replay is the second album by the Japanese electronica band Capsule.  The album was released in 2003 and, unlike the other releases of the group, nearly every track features a guest vocalist.  Toshiko Koshijima sings on only two tracks, "Plastic Girl" and "Music Controller".  Some tracks on the album have a French theme, with the intro and outro both spoken in French by the group member and producer Yasutaka Nakata, while "French Lesson" has "123" and "ABC" being said in French with accordion being played in the background.

Toshiko Koshijima: Toshiko Koshijima (こしじま としこ , Koshijima Toshiko , born March 3, 1980 in Kanazawa, Ishikawa) is a Japanese singer.  Along with composer, record producer and DJ Yasutaka Nakata, she is a lead vocalist of the electronica band Capsule, which they formed in 1997 when both were 17.  Their formal debut came in 2001 with the release of the single "Sakura".  Two more singles and their debut album, "High Collar Girl", followed the same year.

Yasutaka Nakata: Yasutaka Nakata (中田 ヤスタカ , Nakata Yasutaka , born February 6, 1980 in Kanazawa, Ishikawa) is a Japanese DJ, record producer, composer and songwriter.  He formed the band Capsule in 1997 with vocalist Toshiko Koshijima and himself as composer and record producer when both were 17.  They formally debuted in 2001 with the song "Sakura."

Pendulum (drum and bass band): Pendulum is an Australian/British drum and bass and electronic rock band founded in 2002.  Pendulum originally formed in the city of Perth, Western Australia by Rob Swire, Gareth McGrillen, and Paul "El Hornet" Harding.  The band was later expanded to include members, Ben Mount, Peredur ap Gwynedd, and KJ Sawka.  Members Swire and McGrillen also formed the electro house duo Knife Party.  The group is notable for its distinctive sound, mixing hard rock with electronic music and covering a wide range of genres.

Witchcraft (Pendulum song): "Witchcraft" is the second single from Australian drum and bass band Pendulum from their third studio album, "Immersion".  It was released as a digital single on iTunes on 18 July 2010, with the CD single being released the following day.  It debuted at number sixty-two on the UK Singles Chart following high amounts of downloads from the release of the album.  The music video was shot on 2 June 2010 and finished on 25 June, as confirmed by Rob Swire's Twitter feed.  The single includes a drumstep mix by Rob Swire, remixes by drum and bass DJs and producers John B and Netsky, and a remix by house DJ and producer Chuckie.  An exclusive video of Witchcraft was placed on the Pendulum members section "The Other Side".  The single artwork shares a similarity with the artwork for Pendulum's debut album, "Hold Your Colour".  The song is used in many sport montages one of which being the end of season review by the BBC for the 2010/11 Formula One season.  An excerpt from the song was used in the video game and Guitar Hero Live.

Supporting paragraphs: Toshiko Koshijima Rob Swire
Answer: singer