A painter argues that colour and form carry spiritual force. Published in 1911. Still the most persuasive case for abstraction. Read before a museum visit.

Six musicians in a studio in 1959 with incomplete sketches. Most of it recorded in one take. The best-selling jazz album ever made. It still sounds like a question.

The auction of Pierre Bergé and Yves Saint Laurent's collection after his death. What remains of a life. The objects, the rooms, the Proust editions. Quietly devastating.

Stainless steel. Auto-LED backlight. Six months on one battery. It costs thirty pounds and outlasts everything. A lesson in the arbitrariness of price.