Solution: Interlude: Music

Answer: TAMAMO-NO-MAE WEST

Written by Mike Sylvia

In this interlude, the output is a series of notes, mostly marked with either a sharp or a flat, possibly padded with rests to a length of 15. This output is derived by comparing the first fifteen letters of the input letter-by-letter with a hidden answer string and reporting whether each letter of the input is alphabetically too early (flat), too late (sharp), or correct (neither sharp nor flat). This allows solvers to converge on the name of the threat facing the Music department: TAMAMO-NO-MAE WEST.