ABBA and Rutger "Svea Svea" rare unreleased track

info video: here is the rare unreleased ABBA recording of "Svea Svea".
As mentioned in "Abba for the record", the recording was started in July, 1971, with "dummy" Swedish lyrics. ABBA never finished the song, or wrote proper lyrics for it. In 1974 ABBA simply erased their main lead vocal, leaving Agnetha and Frida's backing vocals,and their guitarist Rutger Gunnarsson simply added his lead vocal. It was released as Polar 1188, which puts it between the Swedish version of Waterloo 45, and the English version 45. The 45 is credited on the label to Rutger and the "Kvartetten Bröderna Brothers Trio"