Folk and power metal

Korpiklaani

A folk metal band from Finland. While other folk metal bands began with metal before adding folk music, Korpiklaani started with folk music before turning metal.

Ievan Polkka - https://www.youtube.com/watch?v=a247R3mNs5A
Wooden Pints - https://www.youtube.com/watch?v=QjZ1B897Tuk

Turisas

A Finnish metal band from Hämeenlinna. They were founded in 1997 by Mathias Nygård and Jussi Wickström, and named after an ancient Finnish God of war. Turisas are a folk metal band, incorporating elements of power metal and symphonic metal along with frequent harsh vocals.

Stand Up And Fight - https://www.youtube.com/watch?v=7woW7DmnR0E
To Holmgard And Beyond - https://www.youtube.com/watch?v=cFBIr3Vx16w

Alestorm

Alestorm is a power/heavy metal band from Perth, Scotland. Their music is characterized by a pirate theme, and as a result they have been dubbed a "pirate metal" band by many critics and their fanbase.

Shipwrecked - https://www.youtube.com/watch?v=ggyC0FOzqHM
Drink - https://www.youtube.com/watch?v=f55CqLc6IR0

Sabaton

Sabaton is a power metal band from Falun, Sweden formed in 1999. The band's main lyrical themes are based on war and historical battles. This is heard in the albums Primo Victoria, Attero Dominatus, Coat of Arms, Carolus Rex and Heroes, in which all of the songs contain these motifs, except final tracks which are tribute songs to influential heavy metal bands. Lyrical content drawn from World War I, World War II and other conflicts is prevalent and includes songs about battles and leaders on all sides of said conflicts.

Uprising - https://www.youtube.com/watch?v=01IaKb6DmTw
Panzerkampf - https://www.youtube.com/watch?v=Z83TPaV_w74
Wolfpack - https://www.youtube.com/watch?v=joZaJqyl2S0

Eluveitie

Eluveitie describe themselves as "The new wave of folk metal". The band's style incorporates characteristics of melodic death metal combined with the melodies of traditional Celtic music. They use traditional European instruments, including the hurdy-gurdy and bagpipes, amidst guitars and both clean and harsh vocals. Their lyrics include references to Celtic mythology, particularly the Celtic Gaul village. The lyrics are often in the extinct ancient language Gaulish.

Omnos - https://www.youtube.com/watch?v=msRy4vcSX4k
A Rose For Epona - https://www.youtube.com/watch?v=_1lXdLus2WI

Týr

Týr is a Faroese heavy metal/folk metal band. Their subject matter revolves almost entirely around Viking lore, mythology, and history, taking their name from the Norse god of law and justice.

Hold The Heathen Hammer High - https://www.youtube.com/watch?v=fu2bgwcv43o
By The Sword In My Hand - https://www.youtube.com/watch?v=gH0y3_-jX3o