Watched all or part of the Columbo episodes A Trace of Murder, Ashes to Ashes, and Murder With Too Many Notes.
Murder With Too Many Notes makes no sense. Apparently director Patrick McGoohan's dementia had increased to a fairly severe level and he preferred the comedic and musical scenes while leaving out crucial plot points and apparently nobody involved in the show had the heart to tell him this.
Of course, whenever Patrick McGoohan is mentioned, it should be required to mention The Prisoner, which is brilliant.
Late stage Columbo as a whole is more miss than hit, sadly.