Hermann Scherchen rehearses Bach (vaimusic.com) - YouTube

https://www.youtube.com/watch?v=4s-coTlGgBU

http://vaimusic.com/VIDEO/DVD_4322_69408_69409_Ancerl_Scherchen.htm Hermann Scherchen plays J.S. Bach (1685-1750) arr. Scherchen: Art of the Fugue, BWV 1080 ...