Which of the following resources is useful for program notes in music?

The New Grove Dictionary of Music and Musicians is an essential resource for creating program notes in music because it offers comprehensive and detailed information about composers, musical works, styles, genres, and historical contexts. This dictionary is highly respected among musicologists, providing in-depth analyses and scholarly insight that can enhance the understanding of a piece or performance. When writing program notes, it is crucial to convey the significance of the music being performed, and The New Grove Dictionary serves as a robust reference for accurate information and rich contextual details.

Other resources listed may provide definitions or general information about words and terms but lack the specialized focus on music history, theory, and analysis that The New Grove Dictionary offers, making it the most suitable option for program notes in a musical context.