David Del Tredici, Who Set ‘Alice’ to Music, Dies at 86

David Del Tredici, a Pulitzer Prize-winning American composer who began as an experimentalist but became best known for a midcareer shift toward a style that came to be called the New Romanticism, which yielded a series of rich-hued, tuneful pieces based on Lewis Carroll’s “Alice” stories, died on Saturday at his home in Manhattan. He was 86.

The pianist Marc Peloquin, a longtime friend and collaborator and the executor of Mr. Del Tredici’s estate, said the cause was Parkinson’s disease.

Flamboyant and gregarious, Mr. Del Tredici cultivated a reputation as a beloved scamp who did what he wanted. But he also had a gift for explaining his musical goals and how he had settled upon them. And he was frank about his personal life and his demons — alcoholism, for one. If the composer George Antheil had not already laid claim to the phrase “Bad Boy of Music,” Mr. Del Tredici could easily have adopted it himself.

Starting as a teenager, when he decided to set aside a promising career as a pianist in favor of composition because of the way a piano teacher had spoken harshly to him, Mr. Del Tredici regularly redefined himself. He often abandoned approaches that had brought him success and went against the grain of the classical music world. Typically, he would face opposition at first, only to see his innovations win over listeners and other composers.

He established himself as a young star of the experimental world with a series of settings of the work of James Joyce — most notably “Night-Conjure Verse” (1965) and “Syzygy” (1966), both of which showed how vividly angular, athletic vocal lines and pointillistic instrumental writing could magnify a work’s emotional depths.