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In 2005, Hitachi claimed advancing hard disk storage density with what it called Perpendicular Magnetic Recording in its Deskstar line and embedded Microdrive: https://web.archive.org/web/20110711171907/https://www1.hitachigst.com/hdd/research/recording_head/pr/index.html
But that's only the context for what I wanted to share.
They introduced it with a Macromedia Flash Player animation channeling School House Rock. The original has been lost to time because Flash is dying & the server with the loading content is long since dead, but not before being captured & uploaded to YouTube. It was called "Get Perpendicular": https://www.youtube.com/watch?v=xb_PyKuI7II