Blå Tåget, originally formed under the name "Gunder Hägg," is a Swedish progg band with deep roots in the progressive and political music movement that made its mark during the 1960s and 1970s. Renowned for their melding of satirical lyrics with sophisticated musical compositions, they have leveraged their talents to critique social issues, political landscapes, and the bourgeois elements of Swedish society. Musically, they draw from a rich tapestry of influences including folk, jazz, and blues, which they blend into a distinctly Nordic yet universally resonant sound.

Throughout their career, Blå Tåget has undergone several iterations and occasional hiatuses, while consistently maintaining a keen edge on cultural commentary and artistic innovation. Their more recent works such as "I tidens rififi" and "Moderna Material" reflect their continued evolution and relevance, capturing the nuances of contemporary society through their thoughtful and often poetically layered lyrics. Albums like "Blå Tåget på Fågel blå," "Slowfox," and "Brustna hjärtans hotell" exemplify their enduring appeal and the timelessness of their craft, which continues to appeal to new generations of listeners while remaining a cherished staple among long-time fans of the progg genre.