Neat set of pictographs about The Beatles. Love this one:
Song Keys
The shape of these pictographs is defined by what keys the songs were recorded in for each album. The relative distribution of keys (with mid-song key changes considered) have been mapped over a graph framework based on the Circle of Fifths. The pictographs are in order of album recording.
Check out Revolver and Sgt. Pepper’s Lonely Hearts Club Band.