It's probably because of "personalized results". If Google knows that you listen to Nirvana it will assume you want to hear the song, instead of showing you the

It's probably because of "personalized results". If Google knows that you listen to Nirvana it will assume you want to hear the song, instead of showing you the MOST RELEVANT RESULT, that is the freaking Wikipedia article about the metal. They lost the plot, sometimes things just work and you should not overthink it, the original Google page rank algorithm is a beautiful insight into how distributed knowledge graphs work and self organize. Now they destroyed it's usefulness.