Not only do I believe you can do better than that in trying to rickroll someone, I'm sure you know that for a few years now, youtube videos have been stuffed to the gills with ads. This may include double unskipable 15 second ads at the start of the video. Which is what I got when I knowingly clicked on that link. I had to sit for about half a minute looking at the title before I could hear the iconic drum beat and whatever instrumentation makes the intro of the song before Rick Astley opens with his velvety voice. You merely gave me the tools to rickroll myself and by god I hope you're happy.
Seriously, does anyone know what instrument makes that tune in the song?