Liner notes are the writings found on the sleeves of LP record albums and in booklets that come inserted into the compact disc jewel case or cassette j-cards.
Handwritten inscription by Gustav Holst on Adrian Boult's copy of the score of The Planets (from liner note to EMI CD 5 66934 2)
An album is a collection of audio recordings issued on a medium such as compact disc, vinyl, or audio tape, or in digital format.
Liner notes
…were printed on the outer album jacket or the inner sleeve used to protect a traditional 12-inch vinyl record, i.e., long playing or gramophone record album. The term descends from the name "record liner" or "album liner". Album liner notes survived format changes from vinyl LP to cassette to CD. These notes…
Albums c. 2000 came on compact discs stored in jewel cases (pictured is Hey Petrunko by Ooberman).
Early record albums from the first half of the 20th century resembled photo albums, being packaged in book form on multiple 78 rpm records.
A vinyl LP on a turntable
A typical 8-track tape player