Not a rock band
I remember when blue stragglers were first discovered, they simply didn't fit in with the current theories of stellar evolution (which are pretty well established, btw, by decades of observations and theoretical work). The term comes from their color and their oddball location in the Hertzprung-Russel diagram.
For a while it was suspected they might even be artifacts, artificial or modified stars created by extraterrestrial Type II civilizations. But alas,
Ockham's razor spoiled the fun, and more plausible, natural proceses emerged to explain their presence. Something to do with binary star mergers, as I recall.