ftp://ftp.untergrund.net/users/buzz/exotica/media/audio/High_Voltage_Sid_Collection/  direct

[DIR]C64Music/  direct  4 twin directories
5.25 MB  2009-05-01C64MUSIC_PlaySID.rar
51.38 MB  2009-04-30HVSC_50-all-of-them.rar  2 mirrors
66.71 MB  2009-05-01HVSC_50-all-of-them.tar.gz  2 mirrors
67.16 MB  2009-04-30HVSC_50-all-of-them.zip  2 mirrors
53.22 MB  2009-08-21HVSC_51-all-of-them.rar
69.03 MB  2009-08-25HVSC_51-all-of-them.tar.gz
69.50 MB  2009-08-21HVSC_51-all-of-them.zip