In Dire Straits "Sultans of Swing", what is the meaning of these two lines:
In the first verse:
You get a shiver in the dark
It's been raining in the park but meantime
South of the river you stop and you hold everything
A band is blowing Dixie double four time
You feel all right when you hear that music ring
As I understand it, blowing Dixie means something like fooling around. But what is double four time?
And then later:
And Harry doesn't mind if he doesn't make the scene.
He's got a daytime job, he's doing alright.
He can play the honky tonk like anything,
Savin' it up for Friday night.
What does it mean? Is he playing really good but saving it up or doesn't do it very well?