What to read after The Picture of Dorian Gray?

As they entered they saw Dorian Gray. He was seated at the piano, with his back to them, turning over the pages of a volume of Schumann's "Forest Scenes." "You must lend me these, Basil," he cried. "I want to learn them. They are perfectly charming.""That entirely depends on how you sit to-day, Dorian.""Oh, I am tired of sitting, and I don't want a life-sized portrait of myself," answered the lad, swinging round on the music-stool in a wilful, petulant manner. When he caught sight of Lord Henry, a faint blush coloured his cheeks for a moment, and he started up. "I beg your pardon, Basil, but I didn't know you had any one with you.""This is Lord Henry Wotton, Dorian, an old Oxford friend of mine. I have just been telling him what a capital sitter you were, and now you have spoiled everything.""You have not spoiled my pleasure in meeting you, Mr. Gray," said Lord Henry, stepping forward and extending his hand. "My aunt has often spoken to me about you. You are one of her favourites, and, I am afraid, one of her victims also.""I am in Lady Agatha's black books at present," answered Dorian with a funny look of penitence. "I promised to go to a club in Whitechapel with her last Tuesday, and I really forgot all about it. We were to have played a duet together-three duets, I believe. I don't know what she will say to me. I am far too frightened to call.""Oh, I will make your peace with my aunt. She is quite devoted to you. And I don't think it really matters about your not being there. The audience probably thought it was a duet. When Aunt Agatha sits down to the piano, she makes quite enough noise for two people."