the Ordinary Touch in the Baroque period.
Composers seldom wrote in articulation marks in the scores.
Instead, everyone knew how to perform -
all the notes should be slightly separated
unless notated otherwise.
The distance should not be wide,
just enough to hear the articulation.
Bach referred to such manner of playing
as Cantabile style.
It's like playing a violin -
we don't hear the rests between the notes
but the bow is moved up and down.
Wind instruments also have this tonguing technique -
a silent "tee" is made
when the tongue strikes the reed or roof of the mouth
causing a slight breach in the air flow through the instrument.
That's why we use articulate legato
when playing early music on the organ.
Chromatic Sequence in F Major: I-V64-I6