Lower Keys

In this mode, both hands play only lower keys.

This mode is no longer without errors like the upper keys, but is almost error-free with about 90% correctness.  The right foot must sometimes leave the right pedal, if the sound becomes too strange.  It is useful to play with the left hand accords and the right hands with a melody or use both hands melodies like in the Barock fugues.

The octaves with only upper keys have 7 different keys.  So one can get 7 different scales by using different base keys in playing.  The 7 scales were used in the Renaissance time, but got lost in Barock, when restricting scales to only major and minor scales.