Creative use of search engines and possible lyrics have helped chip away at most of my list over the years. But two tough ones have been bouncing around my head since the early 90s.

One was a rap song I remembered from the radio with a really catchy hook. Then a few years ago during a birthday party the hook was suddenly just there blaring from the speakers, so I grabbed for my phone to search the audio. People yelled at me to put it away and keep dancing, but only I knew what was at stake! The song that was playing was Wilfredo Vargas - Abusadora, although clearly that’s not even remotely rap. But knowing that title, it wasn’t long before I found the song from my memory, which had sampled it. It turns out the original song is much better.

The second one was even more elusive, but it kind of nagged at me because even as a kid I had a sense of how massively popular this Spanish-language song was, so it felt like this one should be easy to find. But just a year or two ago I heard it blaring from the speakers while walking past a restaurant! Again with the audio search, I managed to identify it as Kaoma - Lambada and, whoops, my memory was wrong and it wasn’t even Spanish! But I was right about it being massively popular — plus the song has been widely covered, remixed and sampled (and even that popular version was itself a cover). Except none of this would have helped because the part of the song I thought was catchy was clearly not the iconic hook melody that everyone knows, so humming it for people never helped anyone get close to the answer.