Gunder Hägg was first played on NTS on 11 May 2018. Songs played include I Hajars Djupa Vatten.

Gunder Hägg [1967-1971] was a Swedish progg-band (not to be confused with progressive) with their lyrics cover a wide range, from marxist analysis and invitations to revolution to satire, art criticism, 1940s childhood nostalgia, images from daily life and experimental pop art works. Despite the political view the members mainly had upper-middle class/upperclass background.

The group took the name from Gunder Hägg (December 31, 1918 – November 27, 2004) who was a Swedish runner and multiple world record breaker of the 1940s. He later forced the group by court order to change the name to Blå Tåget 1972.

Torkel Rasmusson (vocals, accordion, harmonica), Leif Nylén (drums), Mats G. Bengtsson (keyboards), Tore Berger (vocals, clarinet), Roland Keijser (saxophone, flute), Göran von Matérn (guitar, 1968-70), Urban Yman (bass, violin, 1968-72), Kjell Westling (guitar, violin, winds, 1968-72), Carl-Johan De Geer (trombone, accordion, vocals, 1970-72)