Left to Its Own Devices

my heart races.
Two color photos of a high school girl
from the 1960's were slipped
into the pages of a book
in the 1980's that found its place
in an extensive personal library that
may no longer exist. The Taiko drums
across the street
slow my pulse
then raise it up.
How many beats per minute
did the doctor say?
How many beats per line?