If it's Tuesday, then it's Riddle Day!

When a songbird, enchanting.
When solo in a band, enduring.
When played at home, entertaining,
Tell me to what I am referring.

Late in the day riddle

I can be smelly.
I can be clean.
I can be blue.
I can be green.

People wear me.
Or they are bare.
Worn in or outside.
Worn here or there.

Many sizes.
Not many shapes.
I'm usually not zoomed in on,
In family tapes.

What am I?

Riddling

A two hundred dollar purchase
With a twenty-five dollar rent,
Until you have all four of us,
Then an even return you'll get.

One is next to Illinois,
And one borders Virginia.
One has no state name next to it,
The fourth's near Pennsylvania

What are we?

First Riddle of 2011

Dead on the field lie ten soldiers in white,
felled by three eyes, black as night.

What's going on here?