The next few days will afford collectors and the general public the opportunity to experience the key works from the forthcoming auctions in London – primary among the pieces on show in the 10th floor galleries in York Avenue is Matisse’s La Leçon de piano from the artist’s early years in Nice between the wars. It is joined by works from Picasso, Marc, Delvaux, Basquiat, Auerbach and Shiraga, in addition to other highlights from the sale.