A method of determining a numerical value of similarity as between a pair of artists is set forth. In the method, for each artist, a list of artist style values is calculated, where each artist style value is representative of a style of the artist and a weight of such style as exhibited by such artist. A set of style similarity values is also calculated, where each style similarity value sets forth a relative similarity as between two styles. Thereafter, based on the list of artist style values for each artist and the calculated set of style similarity values, a style list comparison similarity score is calculated to represent a relative similarity of the styles of the pair of artists.