Aunt Mary's Barbed Wire Waves (Swedish Radio) 1971 is a highly energetic and driving session by the Norwegian band, recorded in 1971 and finally released on vinyl and CD by the Norwegian progressive label Pan Records in 2009. The session captures the band's transition from psychedelic to heavy prog, featuring Bjørn Kristiansen's impressive guitar work and Jan Groth's aggressive organ playing. The album includes five tracks, including covers of Edvard Grieg's 'In The Hall Of The Mountain King'.