The Rolling Stones - Made in the Shade and Metamorphosis

ECONOMICS: When a famous big-time rock and roll band reaches that particular special point in its year when it's time to pack the clean socks and take them on tour for the mutual benefit of the Artiste and the Artiste's Audience, it is advisable to unleash some Product for the Audience to buy while its interest in the Artiste has been stimulated by the prospect of seeing said Artiste live. (Phew).