You’d have to put Never Gonna Give You Up on it, because otherwise humanity would forfeit the chance to rickroll extraterrestrial civilisations at first contact
Yes but, having been but a girl when this track first came out & super snooty about it, by the second time I was Rickrolled I realised it is pure class.
That & it turns out Astley himself is an utter gem.
Bring the tune to the hapless future & long live Rick!
You'd also need to also include our computer architecture, as well as a C compiler, together with its source code.
And then how to reliably store it for hundreds of thousands of years.
Though, we would probably be able to fit it, and a ton of other code, considering our data storage capabilities. The big question would just be the reliability, and redundancy for error correction.
I would love it, despite the fact it'll never be put on, to just have the RyoneYami UTAU cover of Pushing Daisies (originally done by Kenji-B/nostraightanswer) on a modern version.
That, or just a clip from RTGames playing Stardew Valley and laughing at someone in chat saying "fill the festival with mustard gas" and him having to say that's not a healthy reaction to not having a dance partner.