ABBA: Christmas Video (unique Frida-Agnetha duet!)
Excellent (unofficial) mix of Frida (1972) and Agnetha's (1981) solo versions of the Swedish Christmas song "När Det Lider Mot Jul" made by MattPop who successfully managed to seamlessly recreate the ABBA sound. Benny's band the Hep Stars also did a version of this song.
"Nu tändas tusen juleljus" is another Christmas song that has been done by three ABBA related solo acts. Agnetha&Linda , The Hootenanny singers and the BAO have recorded it.