Ill-judged segue
The change of music at the end was in my view a bad mistake. If they'd gone to the credits with everybody still singing "Onward, Christian Soldiers", they'd have maintained the emotional impact of the funeral scene; moving into "Land of Hope and Glory" in an attempt to stir patriotic feeling (which the sermon and the hymn had already managed pretty effectively) kills the moment. I went from being a bit choked up to laughing out loud.
I suppose the fact that I find "Land of Hope and Glory" ridiculously overblown anyway didn't help. But does anybody else think they should have stuck with the hymn?
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"An inglorious peace is better than a dishonourable war" ~ John Adams