I have a goal. A low-pitched goal.
I instruct to attend to (and enjoy) during slightest a single low-pitched artist/band from ALL 193 countries.
So distant we have these twenty-six (I will give a rope as an example):
Argentina (Los Natas)
Australia (Wolfmother)
Brazil (Sepultura)
Canada (Rush)
China (Illusion)
Denmark (Royal Hunt)
England (Led Zeppelin)
Faroe Islands (Týr) [I know it's not a nation though it's cold to list]
Finland (Sonata Arctica)
France (Daft Punk)
Germany (Helloween)
Greece (Firewind)
Iceland (Sigur Rós)
Ireland (God Is an Astronaut)
Italy (Rhapsody)
Jamaica (The Congos)
Japan (Galneryus)
Netherlands (Within Temptation)
New Zealand (Flight of a Conchords)
Norway (In Flames)
Poland (Crystal Viper)
Portugal (Oratory)
Scotland (Nazareth)
Spain (Dark Moor)
Sweden (Truckfighters)
Ukraine (Brilliant Coldness)
United States (The Doors)
So what we ask for, is simply help.
Show me bands, of any genre, from around a world!
And greatfully star a subject if ya can so others can see my idea too! 
Thanks everyone!
Nightlife Commando
Oh yeah duh!
In Flames have been Swedish. Why do we keep meditative they’re Norwegian?
Oh well, interjection for indicating it out 
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This is an admirable goal
I assume that you want countries that you have not already listed?
Andorra (Persefone) — Tech/Extreme Prog Metal
Armenia (Artsruni) — Prog Folk
Austria (Agnus Dei) — Prog Related
Bahrain (Osiris) — Neo-Prog
Bangladesh (Artcell) — Tech/Extreme Prog Metal
Belarus (Pesniary) — Prog Folk
Belgium (X-Legged Sally) — RIO/Avant-Prog
Bolivia (Climax) — Heavy Prog
Bosnia and Herzegovina (Emir Hot) — Progressive Metal
Bulgaria (Velislav Ivanov) — Neo-Prog
Chile (Abrete Gandul) — Eclectic Prog
Colombia (Hidden Path) — Progressive Metal
Costa Rica (Amarillo Cian Y Magenta) — Jazz Rock/Fusion
Croatia (Don’t Mess With Texas) — Post Rock/Math rock
Cuba (Anima Mundi) — Symphonic Prog
Czech Republic (Blue Effect) — Jazz Rock/Fusion
Ecuador (Ashler) — Progressive Metal
Estonia (B F) — Jazz Rock/Fusion
Georgia (Sinatlis Tselitsadi) — Eclectic Prog
Ghana (Osibisa) — Jazz Rock/Fusion
Guatemala (Alux Nahual) — Crossover Prog
Hungary (After Crying) — Symphonic Prog
India (Motherjane) — Heavy Prog
Indonesia (Abbhama) — Symphonic Prog
Iran (Arashk) — Progressive Metal
Israel (Ahvak) — RIO/Avant-Prog
Latvia (Holy Lamb) — Symphonic Prog
Lebanon (Rabih Abou-Khalil) — Prog Folk
Luxembourg (Le Grand Guignol) — Tech/Extreme Prog Metal
Macedonia (Vlatko Stefanovski) — Prog Folk
Malta (Different Strings) — Neo-Prog
Mexico (Agora) — Progressive Metal
Monaco (Edhels) — Neo-Prog
Multi-National (Aethenor) — Progressive Electronic
Pakistan (Mizraab) — Progressive Metal
Panama (Equinox) — Neo-Prog
Peru (Don Gato) — Jazz Rock/Fusion
Philippines (Fuseboxx) — Progressive Metal
Puerto Rico (Asi Somos) — Prog Folk
Romania (Accent) — Symphonic Prog
Russia (Actual Music Quartet Rsm) — Post Rock/Math rock
Serbia (Acid Rain) — Progressive Metal
Slovakia (Ako Doma) — Eclectic Prog
Slovenia (Katalena) — Prog Folk
South Africa (Robert Calvert) — Psychedelic/Space Rock
Switzerland (Agamemnon) — Psychedelic/Space Rock
Syria (Nu.Clear.Dawn) — Progressive Metal
Tunisia (Myrath) — Progressive Metal
Turkey (Altona) — Progressive Metal
Turkmenistan (Gunesh Ensemble) — Jazz Rock/Fusion
Uruguay (Drama) — Neo-Prog
Uzbekistan (X Religion) — Symphonic Prog
Venezuela (Vytas Brenner) — Eclectic Prog
Yugoslavia (Aerodrom) — Prog Related
I used a "select, distinct" from my personal database of bands –
So — there are bands listed "early" in the alphabet —
However, there are so many more — but, I wanted to get this done, before your question was "resolved."
I can pick-out the Best bands, at a later time, for you
Edit –
Yes — I have heard all of these bands, in one form, or another
Hey Man, very commendable goal, let Me help with some Eastern European Metal for You
"Bittersweet Nightshade" by Magica (From Romania)
http://www.youtube.com/watch?v=IjW83BWJYys
"Kikelet" by Dalriada (From Hungary)
http://www.youtube.com/watch?v=aRxwgitd3-Q
Your welcome!
*Edit*
Thought of another couple for You
"Children Of Fall" by Distorted (From Israel)
http://www.youtube.com/watch?v=LxNEaD8vL84
"Wenches And Mead" by Alestorm (Scotland)
http://www.youtube.com/watch?v=C-8Uo1j0AiA
I was in Costa Rica earlier this year and heard a little bit of the band Gandhi while I was there. They seem to be just straight-forward Rock, but I’m basing this on the little bit I’ve sampled.
Arigato:
http://www.youtube.com/watch?v=UTukIz5sVJE&feature=channel_page
Good luck on your mission. That’s very cool!
Aquarium – Radio Silence (Russia)
http://www.youtube.com/watch?v=5vslG9ohoFs
Stereophonics – Maybe Tomorrow (Wales) http://www.youtube.com/watch?v=CaT86mk9gj8
Nirvana Seattle, washington,u.s.a
http://www.youtube.com/watch?v=dXO3OMGKPpw
if you have trouble with any countries, go to wikipedia and type in music of (any country), it’ll talk about traditional music as well as popular and rock. it should at least give you a starting point for looking more into the music scene. i cant say that it does this for every country but it’s what i use when i want to hear a places traditional music. northern africa has a lot of blues and reggae influenced bands, the middle east and scandanavia have a lot of metal. you can find corny pop music almost anywhere
belgium (aksak maboul)
Taiwan – Chthonic
http://www.youtube.com/watch?v=Q_ri3h-58ow&feature=related
Mexico – The Chasm
http://www.youtube.com/watch?v=z-ij3lLTK-M
Russia – Hieronymus Bosch
http://www.youtube.com/watch?v=DMrSKOJSl1c
Switzerland – Eluveitie
http://www.youtube.com/watch?v=iijKLHCQw5o
Melechesh – Isreal
http://www.youtube.com/watch?v=aI3l8j6vvec
btw: In Flames are from Sweden
***
Singapore – Rudra
http://www.youtube.com/watch?v=7gZYhQCS-gw
Indonesia – Kekal
http://www.youtube.com/watch?v=WjqjVLUF8g0
Korea – Pyha
http://www.youtube.com/watch?v=8ltjNXuaOhY&feature=PlayList&p=96C7513E399A523C&index=0
Austria – Asmodeus
http://www.youtube.com/watch?v=rfV-358_lww&feature=related
Laibach – Slovenia
Russia – Regina Spektor
http://www.youtube.com/watch?v=vqaRnYzn4W8
http://www.youtube.com/watch?v=uG5N9OphQbc
India – Lata Mangeshkar
http://www.youtube.com/watch?v=IEmbhtywyMI
Czech Republic – The Ecstasy of Saint Theresa
http://www.youtube.com/watch?v=cL9-yj9kIpI
Belgium – Hooverphonic, Arsenal
http://www.youtube.com/watch?v=Tkn-SYf11lA
http://www.youtube.com/watch?v=ooWqGfqPlaE
Aterciopelados from Colombia, although looking on your list i’m not sure if it would be your cup of tea…
‘El Estuche’- http://www.youtube.com/watch?v=G8xbI2cZg-k
Manic Street Preachers (Wales)
Australia
http://www.youtube.com/watch?v=vXSpwNxIfQk
If You Tolerate This Your Children Will Be Next
http://www.youtube.com/watch?v=DPrGPOxAYE4
Faster
http://www.youtube.com/watch?v=ss-CVMxX9NA
Yes
http://www.youtube.com/watch?v=2mtwZaRObP8
Well i dunno if you’ll get it but… El Tri (Mexico)
France (Stinky Toys)
http://www.youtube.com/watch?v=Lz3ZCKBb2jo
Canada (Les Breastfeeders)
http://www.youtube.com/watch?v=ucP5lWPnlqA
Poland (Tilt)
http://www.youtube.com/watch?v=wsnUmh02Y3c
Nervecell – United Arab Emirates
http://en.wikipedia.org/wiki/Nervecell
http://www.myspace.com/nervecell
Costa Rica has some cool Rock music
*Jose Capmany (father and founder of Costa Rican Rock)
El Barco (The ship)
http://www.youtube.com/watch?v=MZvOxmA5zB4
*Gandhi
El Invisible (The Invisible)
http://www.youtube.com/watch?v=E6oiho9YJvY&feature=related
*Evolucion:
Ni vengo ni voy (Not coming neither leaving) the singer a jerk I know him personally he used to date one of my sisters a total arrogant a$$face but his band is cool
http://www.youtube.com/watch?v=-tmg1qIvnfo
* Suite Doble
Profanar ( desecrate)
http://www.youtube.com/watch?v=Qw4YsGFtQJk&feature=related
Here are bands from a few more countries.
Bolivia – Imayra
Bosnia & Herzegovina – Kemal Monteno
Croatia – Karma
Czech Republic – Cechomor
Hungary – NOX
India – A.R. Rahman
Israel – Ofra Haza
Russia – Bi-2
Slovenia – Siddharta
Turkey – Tarkan