In which format, introduced in 1948, was the album Showcase released in?
LP record The LP (from "long playing" or "long play") is an analog sound storage medium, a vinyl record format characterized by a speed of 33 ⁄ rpm, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry. Apart from a few relatively minor refinements and the important later addition of stereophonic sound, it has remained the standard format for vinyl albums.
List of Billboard 200 number-one albums of 1960 These are the number-one albums in the United States per "Billboard" magazine during the year 1960. Prior to August 1963, separate charts existed for albums in mono and stereo formats. The chart is now known as the '"Billboard" 200'.