The "Geffen Records Musical History of the Decade 1980-1990" is a promotional CD box set featuring artists from that era, like John Lennon, Neil Young, Elton John, and Aerosmith. It was released by Geffen Records and is available through online marketplaces like eBay, with various conditions and volumes for sale. The set contains multiple volumes, covering different years within the 1980s, and includes a variety of hit songs from the decade.