Million Song Dataset
I think this Dataset is probably unfortunately most famous for an incredibly flawed but very headlineable attempt, which you've almost certainly seen somewhere, by a group of researchers from AI and related fields (none of which had musical qualifications) to "objectively" determine if music has gotten worse over the decades. As usual, they arrived at the conclusion that it did by computing a vague number ("timbral diversity" and "harmonic complexity") for each song, and then showing a scary graph of that number going down over time.<p>Not sure what my point is exactly. I guess it's just another reminder of how easy it is to arrive at any conclusion you want using complex algorithms on big data.