I can't find today's earworm – or at least the version that's stuck in my head. The song is easy enough to find – it's called "Friday on My Mind" and was originally released in 1966 by the Australian band Easy Beats.
There are even a few notable covers, including a good one by David Bowie. But the version I have in my head is the version being used in the latest release of the BodyStep aerobics program.
The version is by Bodytronixx – which is one of the many copy cat groups that the makers of BodyStep use to get around copyright laws. Trouble is, I often like the fake versions of these songs better than I like the originals. And they're usually pretty hard to find online.
So here's the original version, in case you want to hear it. The version I have in mind sounds more current and is a bit more electronic in terms of instrumentation – but essentially it's the same song in terms of lyrics and chord changes.