Every dramatic movie but nearly no straight play uses musical underscoring. This celebrated playwright has astute ideas about why that is. Plus, what she did instead of going drinking with James Baldwin. A conversation at Signature Theatre with music from – yes! – Suzan-Lori Parks and the band.

• •  Person: James Baldwin
  •  Place: Fort Knox
  •  Thing: her National guitar
  •  Randy’s Person: Atticus Finch