Couldn't have a more aptly named closer.
co·da
ˈkōdə/Submit
nounMUSIC
the concluding passage of a piece or movement, typically forming an addition to the basic structure.
the concluding section of a dance, especially of a pas de deux, or the finale of a ballet in which the dancers parade before the audience.
a concluding event, remark, or section.
"his new novel is a kind of coda to his previous books"