Mindfulness of hearing is one of five practices of mindfulness of Six Sense base. This practice can ground us by anchoring our attention apart from preventing unskillful states of mind from arising.
We begin with settling and developing more concentration for about 10-12 minutes. Then we shift to mindfulness practice. In the last third of the session, there are instructions for exploring one's own views and opinions, including in relationship to others (connected with the talk).