Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
There was no way to 'sample' tracks as is possible on some sites, so I took a chance in ordering. I am no expert on Avicii but like Avicii's sounds and am sad that he is no longer with us. So....the tracks have grown on me, Still looking for what a CD with the tracks I thought I'd ordered.