The drumming style among Protestant bands of Northern Ireland known as blood and thunder evolved as a result of working-class bands both imitating military practices and adapting them to their changing tastes.
This unique tradition developed through working-class musicians’ endeavors to emulate the musical practices of the dominant military power without access to the tuition techniques and facilities on which that style depends. A transformation taking place in blood and thunder drumming is characterized by an added element of aesthetic deliberation, which is considered by many to be an artistic advancement.
This according to “Blood, thunder, and drums: Style and changing aesthetics of drumming in Northern Ireland Protestant bands” by Ray Casserly (Yearbook for traditional music XLV  pp. 142–163). This issue of Yearbook for traditional music, along with many others, is covered in our new RILM Abstracts of Music Literature with Full Text collection.
Above and below, the Ballynahinch Protestant Boys, a group featured in the article.