Could someone with garageband or something similar recreate the 5 notes from close encounters for me?

Darn, too late to edit, but hopefully a version where each of the notes played slightly longer, so that it felt slightly slower would be ideal.

If you’ve got a recording that you otherwise enjoy, then download Gold Wave in its free demo mode – which is still pretty capable! – and modify the time to suit.

My son says look for tuba samples.

To elaborate: my son spends a lot of time working with music composition and sound creation programs, experimenting, exploring samples, building harmonies and countermelodies in multiple layers, and studying harmonics and the effects of sine waves and other things that I don’t have the vocabulary for. I thought the Close Encounters melody in the film might have been entirely electronically generated, but after listening to it a half dozen times, he said, “Look for tuba samples.”