Memorex Tapes

Memorex Corp. began as a computer tape producer and expanded to become both a consumer media supplier and a major IBM plug compatible peripheral supplier. It was broken up and ceased to exist after 1996 other than as a consumer electronics brand specializing in disk recordable media for CD and DVD drives, flash memory, computer accessories and other electronics.

Memorex entered the consumer media business in 1971 and started the ad campaign, first with its "shattering glass" advertisements and then with a series of legendary television commercials featuring Ella Fitzgerald. In the commercials, she would sing a note that shattered a glass while being recorded to a Memorex audio cassette. The tape was played back and the recording also broke the glass, asking "Is it live, or is it Memorex?" This would become the company slogan which was used in a series of advertisements released through 1970s and 1980s.

In 1982, Memorex was bought by Burroughs for its enterprise businesses; the company’s consumer business, a small segment of the company’s revenue at that time was sold to Tandy. Over the next six years, Burroughs and its successor Unisys shut down, sold off or spun out the various remaining parts of Memorex.

https://en.wikipedia.org/wiki/Memorex