by Sr Fidelis
Mode 4 recites on LA (a note lower than TI), but shares the home tone of MI. For the most part, Mode 4 pieces dwell in the lower part of the range, and often the reciting tone LA, is the highest pitch of the piece. Take a look and listen to the example below.
The first five notes of this brief piece go right down the modal scale from LA to MI. We hear the characteristic FA-MI sound twice in this antiphon.