Charleston’s Gaillard Auditorium redo has had to deal with 37 300-year-old graves discovered by construction workers on the site.

Los Angeles’ Walt Disney Concert Hall might have an even more difficult challenge underground: A new subway.

Officials with the Los Angeles Philharmonic, which uses the Disney concert hall, are concerned that trains in a planned subway could be heard in the performance space 125 feet above.

As the Los Angeles Times reported, “Nothing in the Los Angeles Philharmonic’s repertoire calls for 135-ton trains.”

Metro officials have assured the orchestra that it will not build anything that causes noise audible in the building. They conducted studies that indicated there would not be a problem.

But one recent related study casts doubts. Metro officials are taking note. More analysis is being planned.

Studying and planning where to relocate 36 graves stalled work at the Gaillard a bit. But at least the grave sites are quiet. So far.