This seems such a divisive episode. I'm assuming the singing has a big part to play in that. Felt like Doctor Who: The Musical at times.

I honestly still don't know whether I like it or not. It was certainly unique, it had a lot of heart and it actually felt very Star Trek to me at times but it did reek of sentimentality. I do know that I loved the reference to The Doctor's monologue at the end though, even if him losing his memories wasn't particularly well explained.