Question: Are Terry Hall and Julian Casablancas both American singers?

Context paragraphs:
Reptilia (song): "Reptilia" is a song by indie rock band The Strokes, and the second single from their second album "Room on Fire".  The single's B-side contains "Modern Girls & Old Fashion Men", where lead singer Julian Casablancas duets with Regina Spektor.  The official release date was delayed slightly after Casablancas objected to the song being credited as "The Strokes and Regina Spektor", claiming that it should read "Regina Spektor and The Strokes".

One Way Trigger: "One Way Trigger" is a song by American rock band the Strokes.  Written primarily by Albert Hammond, Jr. and Julian Casablancas, it was released as a free download ahead of their fifth studio album, "Comedown Machine" and was made available for streaming via YouTube and SoundCloud, and as a free download via the band's official website on January 25, 2013.  Casablancas posted a stylized lyric sheet for the song, designed by long-time collaborator Warren Fu, on his official website on January 30, 2013.

Human Sadness: Human Sadness is the first single from the debut album Tyranny by the American rock band Julian Casablancas + The Voidz, released on September 2, 2014, via Casablancas' indie record label Cult Records.  The song is eleven minutes long.

Tyranny (Julian Casablancas+The Voidz album): Tyranny is the second studio album by Julian Casablancas and the first studio album accompanied by American band The Voidz, which was released on September 23, 2014 by Casablancas's label, Cult Records.  The first single from the album, the 11-minute track "Human Sadness", was released on September 2, 2014.  The music video for the second single "Where No Eagles Fly" was directed by guitarist Jeramy "Beardo" Gritter.  On September 19, "Tyranny" was made available to stream on the websites of "Rolling Stone" and Pitchfork Media.

Terry Hall (singer): Terence Edward "Terry" Hall (born 19 March 1959) is an English musician and the lead singer of The Specials, and formerly of Fun Boy Three, The Colourfield, Terry, Blair & Anouchka and Vegas.  He has released two solo albums and has also collaborated with many artists including David A. Stewart, Bananarama, Lightning Seeds, Sinéad O'Connor, Stephen Duffy, Dub Pistols, Gorillaz, Damon Albarn, D12, Tricky, Junkie XL, Leila Arab, Lily Allen, Shakespears Sister, Salad, and Nouvelle Vague.

Julian Casablancas+The Voidz: Julian Casablancas and the Voidz (stylised as Julian Casablancas+The Voidz and occasionally JCVZ), or simply The Voidz, are an American rock band formed by Julian Casablancas of The Strokes.  The band consists of Casablancas (lead vocals) as well as Jeramy "Beardo" Gritter (guitar), Amir Yaghmai (guitar), Jacob "Jake" Bercovici (bass guitar, synthesizers), Alex Carapetis (drums, percussion), Jeff Kite (keys) and Shawn Everett (production).

Phrazes for the Young: Phrazes for the Young is the debut solo album by American songwriter Julian Casablancas, released on November 2, 2009 in the UK and November 3 in the US.  Casablancas, who is best known for being the front man of New York rock band The Strokes, recorded the eight-song album in 2009 in New York, Los Angeles, and Omaha, Nebraska.  Jason Lader served as producer, and musician Mike Mogis (from Bright Eyes and Monsters of Folk) contributed additional production.  The album title is a reference to Oscar Wilde's "Phrases and Philosophies for the Use of the Young".

Cult Records: Cult Records is an independent record label founded by Julian Casablancas (of The Strokes) in 2009.  Initially used as an imprint for Casablancas' solo releases, Cult later became a standalone label, and in June 2014 entered a label services agreement with Kobalt.

Julian Casablancas: Julian Fernando Casablancas (born August 23, 1978) is an American singer, producer, and songwriter.  He is the lead vocalist of the rock band The Strokes.  In addition to his work with The Strokes, Casablancas led a solo career during the band's hiatus, releasing the album "Phrazes for the Young" on November 3, 2009.

The Strokes: The Strokes are an American rock band from New York City.  Formed in 1998, the band is composed of vocalist Julian Casablancas, lead guitarist Nick Valensi, rhythm guitarist Albert Hammond Jr., bassist Nikolai Fraiture, and drummer Fabrizio Moretti.  Following the conclusion of five-album deals with RCA and Rough Trade, the band has continued to release new music through Casablancas' Cult Records.

Supporting paragraphs: Terry Hall (singer) Julian Casablancas
Answer: no