Looking on the internet deeply has found these results:

The mood isn't all too great, let's sing a song is the most popular phrase on the web.

The mood is staggering, let's sing a song 11,130,000 results on the web	The mood isn't all too great, let's sing a song 13,580,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
And like that, the mood is ruined. The mood is solemn only the crickets mourn. The mood is already plenty light. Across Europe, the mood is dark. I would say the mood is jubilation, Will. To lighten up the mood, let's have a round of bombs. Listen, girls, let's sing a song for Nadya. Bogdanski is staggering, but he is up and on his feet.	And like that, the mood is ruined. The dialogue didn't change, but the mood is completely different. The man who seems bound and determined to break the mood is Boss Tanaka. The mood is solemn only the crickets mourn. I would say the mood is jubilation, Will. Across Europe, the mood is dark. The mood is already plenty light. That depends on if the mood is reciprocated, 'cause I got to be honest... not feeling a lot of love right now.

The mood is staggering, let's sing a song

11,130,000 results on the web

The mood isn't all too great, let's sing a song

13,580,000 results on the web

More popular!

And like that, the mood is ruined.
The dialogue didn't change, but the mood is completely different.
The man who seems bound and determined to break the mood is Boss Tanaka.
The mood is solemn only the crickets mourn.
I would say the mood is jubilation, Will.
Across Europe, the mood is dark.
The mood is already plenty light.
That depends on if the mood is reciprocated, 'cause I got to be honest... not feeling a lot of love right now.