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Americana (also known as American roots music) is an amalgam of American music formed by the confluence of the shared and varied traditions that make up the musical ethos of the United States, specifically those sounds that are merged from folk, country, blues, rhythm and blues, rock and roll, gospel, and other external influences. Americana, as defined by the Americana Music Association (AMA), is "contemporary music that incorporates elements of various mostly acoustic American roots music styles, including country, roots rock, folk, gospel and bluegrass resulting in a distinctive roots-oriented sound that lives in a world apart from the pure forms of the genres upon which it may draw. While acoustic instruments are often present and vital, Americana also often uses a full electric band."
Despite the genre's most common name, it is not practiced solely by artists from the United States, as numerous artists from Canada are also prominent in the genre. Canadian bands in the genre will sometimes be referred to as Canadiana rather than Americana in Canadian media, although this is not a widely recognized synonym elsewhere.
Americana as a radio format
Americana as a radio format had its origins in 1984 on KCSN in Northridge, California. Mark Humphrey, a contributor to country/folk Frets magazine, hosted a weekly radio show called "Honky Tonk Amnesia" which played "country, folk, honky tonk, cajun, dawg, blues, and old-time music," a combination that the country music station KCSN advertised as "Americana." The format came into its own in the mid-1990s as a descriptive phrase used by radio promoters and music industry figures for traditionally-oriented songwriters and performers.
Because of listener interest in the artists who do not fit as comfortably in the country or rock genres, a radio format called "Americana" was developed by the AMA and reported by R&R (Radio & Records, a radio trade publication). Born out of Triple A, non-commercial, country and other formats, the Americana format is the sum of the parts that have showcased Americana music since its inception.
The AMA grew out of the format as an effort to bring all Americana music supporters, performers, and professionals together to expand the visibility and viability of the music. The radio format, including the term "Americana," began in the late 1980s and a decade later through the efforts of Rob Bleetstein of San Francisco and Jon Grimson of Nashville. Bleetstein became the first Americana chart editor as Gavin magazine (a former radio trade publication) created the first Americana radio chart, which was published on January 20, 1995. Bleetstein worked closely with KFAN-FM "Texas Rebel Radio" in Texas and KPIG, KFAT's descendant, in California in developing the Americana format. Grimson became the first Americana radio promoter after having promoted the music previously at Warner Brothers Records Nashville, and promoting those releases that WB worked to radio formats outside the mainstream country stations.
Some of the notable artists in the genre are:
- Ryan Adams 
- Alabama Shakes
- Dave Alvin
- Avett Brothers
- The Band
- Be Good Tanyas
- Ryan Bingham
- Blind Boys of Alabama
- Blue Rodeo
- Ruby Boots
- Billy Bragg
- Jonathan Byrd
- Larry Campbell
- Brandi Carlile
- Neko Case
- Johnny Cash
- Rosanne Cash
- Guy Clark
- Crooked Still
- Rodney Crowell
- Jerry Douglas
- Drive-By Truckers
- Bob Dylan
- Justin Townes Earle
- Steve Earle
- Joe Ely
- Alejandro Escovedo
- John Fogerty
- John Fullbright
- Rhiannon Giddens
- Jimmie Dale Gilmore
- Grateful Dead
- Levon Helm
- John Hiatt
- Hurray for the Riff Raff
- I'm With Her
- Jason Isbell
- Kaia Kater
- Alison Krauss
- Jim Lauderdale
- Raul Malo
- The Mavericks
- John Mellencamp
- Tift Merritt
- Milk Carton Kids
- Blake Mills 
- Van Morrison
- Michael Nesmith
- Nick 13
- Aoife O'Donovan
- Old Crow Medicine Show
- Bonnie Raitt
- The Sadies
- Darrell Scott
- Pete Seeger
- Michelle Shocked
- Bruce Springsteen
- Chris Stapleton
- The Weavers
- Josh Ritter
- Gillian Welch
- Lucinda Williams
- Neil Young
- Grammy Award for Best Americana Album
- Alternative country
- Country rock
- Roots rock
- Heartland rock
- Southern rock
- Americana Music Festival & Conference
- Sisters Folk Festival
- Mile of Music
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'In all likelihood, without the Grateful Dead and without Bob Weir, there would not be an Americana community,' said Jed Hilly, executive director of the Americana Music Association...
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