Using archival recordings of voices from far-past times, make an audio walk as a vehicle for being in the presence of the dead. (Trawl Internet Archive or the Library of Congress’s collections for archival starting point.)
Consider the possibility of offering a living voice (yours or another’s) in counterpoint or conversation.
As you look for archival audio, tune in to the way that decades or periods leave their signature in people’s voices, not just the sound of age or youth of the speaker, but a sort of consensus around how to speak along parameters of formality and informality, inflection, vowel sounds, and so on.
Think about the energized fact of the living, walking body as the receiver of these voices of the dead.
If you have old family records — recordings or home movies — you might also considering creating yourself a private walk, where you can be in the presence of your own dead.