This is by Bartok - yes, really

Almost a Friday historical - the Andante, or Albumblatt, by Bartok, written for the then 15-year-old Adila d'Aranyi (elder sister of Jelly) in 1902. Bartok fell for the d'Aranyis in turn (oh, and Stefi Geyer), but it seems that neither of those feisty sisters returned his feelings. Which, to judge from this performance (1978) by Gyorgy Pauk and Peter Frankl, must have been pretty powerful. Enjoy.