Born Hugh Erik Stewart on June 4, 1959 in West Covina, California, to tennis player Hugh Wright Stewart and Swedish socialite Agnete Sylvan, he showed a keen interest in music from his early years, with an increasing gift for singing and playing piano, keyboards and guitars.

After drifting through the progressive rock and Punk rock eras he signed to “Planet Records” in 1983, releasing the disco single “Midnatt” (“Midnight”), sung in Swedish. He then collaborated with “Hasse Carlsson and the Tectives” as second keyboardist and back up singer, for his first real touring experience in Sweden. After a name change to “One by One”, now with Christopher (his mother had renamed him Christopher after their return to Sweden) as the band´s lead singer, they released two singles,“Dancing Mono” and “Say you Never”. Although enjoying numerous live experiences and TV shows, no album materialised and the band eventually broke up.

Between 1989 and 1996 Christopher remained isolated in his studio, determined to find his own personal style as a musician, eventually releasing his first solo album in 1995, “The Home Recordings”, subsequently re-released in 1999 as “Blue Waters”. A close friend’s tragic suicide in 1997 led to the composition of a mini pop opera tribute, “The Life of a Housewife”, comprising 15 songs. At that time, Christopher decided to change his name to Nad Sylvan. After uploading the album onto mp3.com, interest followed from Michael B. Tretow (ABBA’s audio engineer) and a collaboration began, culminating with many successful live appearances at the “Nalen” in Stockholm and the release of the CD “Sylvanite” in 2003.

In October of that year, Nad attended a concert of Canadian Genesis tribute band The Musical Box (band), touring “Selling England by the Pound” at the Royal Albert Hall. His enthusiasm for the performance led him to the Genesis website/forums where he met Bonamici (aka. Christian Thordin), starting a successful collaboration, “Sylvan and Bonamici”, that led them to the “Unifaun” Project. Meanwhile, Nad became star reviewer Steve Gilmore’s “Artist of the Year” (December 2003), thanks to his song “Yellow Sky” from “Sylvanite”. In 2008 “Unifaun” was released by “Progress Records” and is now considered a cult album. It was repackaged in 2013 with new album artwork by Claude Martin.

After the “Unifaun” project, Nad was discovered by Roine Stolt of The Flower Kings, which led to the birth of the band “Agents of Mercy”. In 2009 Nad began touring with the band to promote “The Fading Ghosts of Twilight”. The band toured successfully around Europe and the US and released three albums through to 2011: “Dramarama”, “Power of Two”, (live album with Karmakanic) and “The Black Forest”.

In April 2012 Nad caught the attention of Steve Hackett, former guitarist and songwriter of Genesis (1970-1977), who had enjoyed considerable solo success since leaving the band. With the creation of the "Genesis Revisited” project, Nad Sylvan sang on the Genesis Revisited II album, followed by the Hammersmith and the Royal Albert Hall live albums released in 2013 and 2014. Nad also began a world tour at this time, with “Genesis Revisited” playing classic theatres and concert halls, with huge success.

In October 2015 another Genesis Revisited live album/DVD was recorded at the Liverpool Philharmonic Hall, coinciding with the release of his solo album “Courting the Widow” by Inside Out Music (Sony), that was well received by critics and fans alike. Further success followed with “The Bride Said No”, released in May 2017, featuring contributions by the finest musicians in the world of Progressive Rock.

In January 2018 Steve Hackett released his fourth live album, with Nad Sylvan as vocalist, recorded at the Birmingham Symphony Hall. Much appreciated and requested, Nad took part in many other projects with bands and artists in the Prog world.

In July 2019 Nad Sylvan released a new solo album ("The Regal Bastard"), while at the same time touring with Steve Hackett for his seventh year of collaboration on the "Genesis Revisited" project.