Question: what is the nationality of the signer whose vocals were used for tilted?

Context paragraphs:
Laughter Through Tears: Laughter Through Tears is the second album released by London, England-based experimental band Oi Va Voi.  Some of the tracks on the album were originally on the band's debut, "Digital Folklore", one example is the Hungarian folk song "A Csitári" whose vocals were performed by a male singer in the older album, and by Judit Németh in "Laughter Through Tears".  The album includes a remix of "7 Brothers" as a hidden track, it is found after the 3 minutes and 7 seconds of silence after "Pagamenska".

Anita Kelsey: Anita Kelsey (born in Mitcham, Surrey, United Kingdom) was a singer-songwriter ( now works as a cat behaviourist in London UK ) whose vocals and top lines are featured on many hit dance records and feature films.  Her voice has appeared as backup vocals for artists such as Kings of Leon, The Good, The Bad and The Queen, Razorlight, Boy George and the Spice Girls, as the featured vocalist on big screen productions such as "Dark City", and more recently as the singer and songwriter for a series of successful dance projects.

Jaspreet Jasz: Jaspreet Jasz (born Jaspreet Singh Kohli in New Delhi, India) is an Indian singer whose vocals have been featured in Bollywood and Telugu cinema, as well as advertisement jingles.  He won recognition through the music reality television series "Indian Idol".

A Thousand Years (Christina Perri song): "A Thousand Years" is a song by American singer-songwriter Christina Perri and David Hodges.  It is taken from the album "".  The song serves as the second single from the album.  The song was released as a digital download on October 18, 2011 worldwide.  Perri re-recorded the song with vocals from Steve Kazee for "" titled "".

Antidote (Swedish House Mafia song): "Antidote" is a song by Swedish house music supergroup Swedish House Mafia in collaboration with Australian electronic dance music duo Knife Party.  It was released on 16 December 2011 in the United States as the second single from the Swedish House Mafia compilation album, "Until Now".  The remix EP was released on 15 January 2012 for the UK digital download in the iTunes Store.  "Antidote" was written by Swedish House Mafia members Axwell, Steve Angello and Sebastian Ingrosso, and Knife Party members (the members of the drum and bass band Pendulum) Rob Swire and Gareth McGrillen.  The song contains vocals by Swedish American hip hop recording artist Adam Baptiste (also known as ADL), whose vocals are uncredited, co-written by Swedish songwriter Klas Åhlund.

Digital Folklore: Digital Folklore is the self-published debut of London, England based experimental band Oi Va Voi.  Some of the tracks on the album were later abridged and re-recorded for "Laughter Through Tears", one example is the Hungarian folk song "A Csitari" whose vocals were performed by a female singer on the new album.

Building a Better Me: Building a Better Me is the fifth full-length album from San Diegan punk band Dogwood, released in 2000.  Instrumentation for the album was produced and recorded by Sam Boukas and Dogwood at Goldentrack studio in San Diego, but vocals were produced and recorded at the Blasting Room studios in Fort Collins, Colorado by Descendents and ALL guitarist Stephen Egerton, whose vocals appear on the final track "Nothing New".  In 2001 the band was awarded the San Diego Music Award for best Punk band for the album.

¡Viva la Cobra!: ¡Viva la Cobra!  is the second studio album by Cobra Starship.  The album was released on October 23, 2007.  It was produced by Fall Out Boy's Patrick Stump, whose vocals also feature throughout the album.  The album peaked at No. 80 on "Billboard" 200.  It has sold more than 40,000 copies to date.

It's Only Christmas: "It's Only Christmas" is a song by Irish pop singer and Boyzone frontman Ronan Keating, released as the second single from his sixth studio album, "Winter Songs", exclusively in Australia and New Zealand.  The version of the song featured on the British version of "Winter Songs" features vocals from Hayley Westenra, however, the version of the song featured on the Australian version of the album replaces her vocals with those of Kate Ceberano, and thus, whose vocals appear on the single.  Although not an international hit like his previous singles, Keating's version of the song failed to make the Top 100 of the Australian Singles Chart, peaking at #134 after one week on the chart.

Steve Kazee: Steve Kazee (born October 30, 1975) is an American actor and singer.

Supporting paragraphs: A Thousand Years (Christina Perri song) Steve Kazee
Answer: American