Now that's a sentence you don't see too often, especially not on the booklet in a music album. After the introduction there follows analysis and musical comment on the piece itself.
It is the opening paragraph of the accompanying analytical notes to a classical album with a Mozart piano concerto. Leaflet neatly tucked in the album inside, record sleeves with handy rivets preventing the disks from sliding into the album back.
His Master's Voice album number 301, Mozart concerto in C minor performed by Edwin Fisher and the London Philharmonic Orchestra and recorded on eight sides, four 12" records, in 1937.
(Still very good to listen to, with or without the surrounding crash of civilization...)