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cryptomnesia

n. (context psychology English) The phenomenon of the reappearance of a long-forgotten memory as if it were a new experience

Wikipedia
Cryptomnesia

Cryptomnesia occurs when a forgotten memory returns without it being recognized as such by the subject, who believes it is something new and original. It is a memory bias whereby a person may falsely recall generating a thought, an idea, a song, or a joke, not deliberately engaging in plagiarism but rather experiencing a memory as if it were a new inspiration.

Cryptomnesia (album)

Cryptomnesia is the debut studio album by El Grupo Nuevo de Omar Rodriguez Lopez, released on May 5, 2009. The album is the first of three albums recorded by the band, and is Rodriguez-Lopez' eleventh solo record overall. According to Rodriguez-Lopez, the album was "recorded in the summer of 2006, around the same time I did Old Money. It was a very, very fun record to make. I made that record in five or six days."