Question: Are Chad Kroeger and Charlotte Wessels both singers?

Context articles: Hero (Chad Kroeger song)
Why Don't You &amp; I
Nickelback discography
Thornley (band)
Bad Girl (Avril Lavigne song)
Charlotte Wessels
List of songs recorded by Nickelback
Chad Kroeger
Avril Lavigne (album)
Hello Kitty (song)

"Hero" is a song recorded by Chad Kroeger (lead vocalist of Nickelback) and Josey Scott (then lead vocalist of Saliva) for the soundtrack to the 2002 film "Spider-Man".
 It was written by Kroeger, Scott, and Tyler Connolly and recorded specifically for the film.
 "Hero" was released through Roadrunner Records on March 1, 2002 as the soundtrack's lead single.
 The song serves as Kroeger's debut solo release.
"Why Don't You & I" is a 2003 top ten hit by Santana.
 The song was written by Chad Kroeger and recorded for Carlos Santana's 2002 album "Shaman", on the Arista record label.
 The song was re-recorded in 2003 with vocals by Alex Band of The Calling, as the third single in the United States.
 It was released as the second single in Canada in the winter of 2003.
 The Chad Kroeger version was also released alongside the Alex Band version in the United States.
The discography of Nickelback, a Canadian rock band, consists of nine studio albums, two compilation albums, one extended play (EP), 43 singles, five video albums, and 32 music videos. Formed in Hanna, Alberta in 1995, Nickelback was originally composed of vocalist and guitarist Chad Kroeger, guitarist and backing vocalist Ryan Peake, bassist Mike Kroeger and drummer Brandon Kroeger.
 The band self-released its debut EP "Hesher" and debut full-length album "Curb" in 1996, and later signed with Roadrunner Records and released "The State" in 1999.
 Ryan Vikedal replaced Brandon Kroeger in 1998, after the band spent a brief time with Mitch Guindon on drums.
 "The State" reached number 130 on the US "Billboard" 200 upon its international release in 2000, and "Curb" reached number 182 on the chart when it was reissued by Roadrunner in 2002.
 Three singles from "The State" reached the US Mainstream Rock top 40, including the top ten releases "Leader of Men" and "Breathe".
Thornley was a Canadian post-grunge/hard rock band formed by Ian Thornley in 2002.
 The band was started when Thornley returned to Toronto after the break-up of his earlier band, Big Wreck.
 With the help of Chad Kroeger of Nickelback, Thornley signed to Kroeger's 604 Records.
 The last line-up of the band as Thornley had Paulo Neta (guitar), Dave McMillan (bass guitar), Christopher Henry (drums) and the former member of Big Wreck Brian Doherty (guitar).
 As of 2010, this line-up plays under the name Big Wreck.
"Bad Girl" is a song by Canadian singer Avril Lavigne for her fifth studio album, "Avril Lavigne" (2013).
 It was written by Lavigne, Chad Kroeger and David Hodges, while the song was produced by Kroeger and Hodges and features guest vocals by American singer Marilyn Manson.
Johanna Charlotte Wessels (born 13 May 1987) is a Dutch singer-songwriter who was born in Zwolle, Netherlands.
 Best known as the lead vocalist for the Dutch symphonic metal band Delain.
 She is also in the symphonic rock musical group called Phantasma.
Nickelback is a Canadian hard rock band from Hanna, Alberta.
 The band was founded in 1995 by vocalist and guitarist Chad Kroeger, guitarist and vocalist Ryan Peake, bassist Mike Kroeger and drummer Brandon Kroeger.
 After the release of their debut extended play (EP) "Hesher", the group released its debut full-length album "Curb" in 1996, which featured songwriting credits for all four band members as well as producer Jeff Boyd. "
The State" followed in 1998, once again written by all four members of the band.
 After Brandon Kroeger left the band and was replaced by Ryan Vikedal, Nickelback signed with Roadrunner Records and released their third album "Silver Side Up" in 2001, supported by lead single "How You Remind Me". "
The Long Road" followed in 2003, again credited to all four band members equally.
Chad Robert Turton (born November 15, 1974), known professionally by his mother's maiden name of Kroeger, is a Canadian musician and producer, best known as the lead vocalist and guitarist for the Canadian rock band Nickelback.
 In addition to his work with Nickelback, Kroeger has been involved with a variety of collaborations, appearing as a guest musician in several songs and has contributed in both production and songwriting.
 He has co-written several songs for other artists and for films.
Avril Lavigne is the fifth studio album by Canadian singer-songwriter Avril Lavigne.
 It was released on 1 November 2013 by Sony Music Entertainment.
 The album is a follow-up to her 2011 effort "Goodbye Lullaby" and was developed shortly after its release.
 Lavigne collaborated with numerous producers including Martin Johnson, Peter Svensson, David Hodges, Matt Squire and her then-partner Chad Kroeger.
 In both musical and lyrical aspects, the album represents a departure from the acoustic-oriented production of her previous album "Goodbye Lullaby", featuring a more pop and upbeat sound juxtaposed with power and piano ballads.
 "Avril Lavigne" also incorporates electronic music, industrial and punk rock.
 The album features two vocal collaborations: Kroeger and American industrial metal singer Marilyn Manson.
 This was her first and only album through Epic.
"Hello Kitty" is a song by Canadian singer-songwriter Avril Lavigne, taken from her self-titled fifth studio album, "Avril Lavigne" (2013).
 The song was released as a Japan-only fourth single.
 It was written by Lavigne, Chad Kroeger, David Hodges and Martin Johnson.
 Production was handled by Kroeger and Hodges, with additional production by Brandon Paddock and Kyle Moorman.
 Musically, "Hello Kitty" is a J-pop, dubstep, and EDM song, featuring an electro-influenced drop.
 The song was influenced by her obsession with all things related to the Japanese brand Hello Kitty, and has some sexual content.