Arnthor Birgisson born on 12 February 1976 in Reykjavík, Iceland, is an Icelandic/Swedish songwriter and producer. Arnthor moved to Sweden in 1978 at age two, and lives in Stockholm.
As young Arnthor attended Adolf Fredrik's Music School in Stockholm, Sweden. He began his professional songwriting and production career in 1996 working at Cosmos Studios together with Kent (Gillström) Isaacs and Bloodshy. In 1997, the founders of Murlyn Music, Anders Bagge and Christian Wåhlberg, saw the potential in Arnthor and Bloodshy, and handpicked them for the newly formed production company. Arnthor's breakthrough came a year later with the song "Because of You" written for 98 Degrees. Birgisson specifically desired to collaborate with Janet Jackson, saying "let's just say we will definitely be prepared if and when that happens." During his tenure at Murlyn Music (until 2003) a series of hits were created for artists such as Janet Jackson, Ronan Keating, Jennifer Lopez, Samantha Mumba and Celine Dion.
Between 2003 and 2008 Arnthor worked at Maratone (formerly Cosmos Studios. During the years at Maratone, Arnthor created songs for Enrique Iglesias, Shayne Ward and Westlife, among others.
In 2005, Arnthor was awarded Best Pop Song at the BMI London Awards for Janet Jackson's "All Nite (Don't Stop)."
In 2008, Arnthor's song "Say OK", performed by Vanessa Hudgens, was awarded the prize for "This Year's Biggest American Pop Hit" at the BMI London Awards.
Arnthor has also worked with Sony BMG Music Entertainment, Universal Music, EMI Group and Warner Music Group.
In 2008 Arnthor founded the Swedish-based record and production company, Aristotracks, together with businessman Linus Andreen and artist Emilia de Poret. Since then he has written and produced songs for artists such as Britney Spears, Leona Lewis and Shontelle.
On 7 September, Birgisson won Popjustice's 2011 Twenty Quid Music Prize for "Song of the Year" with "Higher" by The Saturdays.
Arnthor is currently working with Aristotracks artist, Kim Cesarion, on his debut project. In mid-2011 Arnthor founded a band with Ina Wroldsen called Ask Embla.
Selected songs written / co-written and produced
1998 - 98 Degrees "Because of You" - producer/co-writer,
2000 - Samantha Mumba "Gotta Tell You" - producer/co-writer,
2001 - Jessica Simpson "Irresistible" - producer/co-writer,
2002 - Carlos Santana "Let Me Love You Tonight" - producer/co-writer,
2003 - Celine Dion "Sorry for Love" - co-writer,
2004 - Janet Jackson "All Nite (Don't Stop)" - producer/co-writer,
2006 - Danity Kane "Stay with Me" - producer/co-writer,
2007 - Vanessa Hudgens "Say OK" - producer/co-writer,
2007 - Enrique Iglesias "Wish I Was Your Lover" - producer/co-writer,
2008 - Emilia de Poret "Pick Me Up" - producer/co-writer,
2009 - Natalie Bassingthwaite "Alive" - producer/co-writer,
2010 - Shontelle "Impossible" - producer/co-writer