Akatsuki carries 68 fan-made images of Japanese crowdsourced digital pop star Hatsune Miku, etched onto three aluminium plates. I suppose this makes Miku the solar system's first interplanetary celebrity. (Also last year, a Miku music video was beamed into deep space by the European Space Agency as part of its "Wake up, Rosetta!" campaign).
I believe the only other pop music purposefully represented in deep space, is the Chuck Berry song Johnny B. Goode, which is on NASA's Golden Records carried by the two Voyager probes.