I think i know what you're talking about. It was the video where someone was playing it in Church, right?
That song was the Interlude on DJ DangerMouse's "The Grey Album" (A Project Jay Z had NOTHING to do with). Danger Mouse Pieced all that together. I guess to an extent he was trying to be artistic, since there are a lot of rumors that the Beatles purposely put backwards messages in some their music (I don't know if that was Danger Mouses intent though, just my assumption).....Jay had nothing to do with the track. Danger Mouse just randomly pieced together vocals from "Threats".