Music app won't open on macOS 26.1

Music won’t open on macOS 26.1.

Whether I double-click the icon, or select it and then click ⌘O, or choose Open File... from the Finder menu, the logo expands for a fraction of a second and then goes back to its usual inert form. Other than that, nothing happens; the active program remains the Finder. Issuing the command “open -a Music” from a Terminal window is basically a no-op. ⌘I tells me: Created: 29 October 2025., Version: 1.6.1, Last opened: 2 December 2025 .