Additional examples are adjusted to the entries in an automated way - we cannot guarantee that they are correct.
The same speeches were used again phonographically at the Electrical Show in Chicago in 1909--and now the records are preserved for reproduction a hundred or a thousand years hence.
America's phonographically challenged orchestras might suggest an answer: Never having heard the ripping sound that the "Pathetique" Symphony could have on a high-density disk, record collectors have never heard Tchaikovsky at all.