Answer:
A hill full, a hole full, yet you cannot catch a bowl full.
I can be moved. I can be rolled. But nothing will I hold. I'm red and I'm blue, and I can be other colors too. Having no head, though similar in shape. I have no eyes - yet move all over the place.
My first is in blood and also in battle. My second is in acorn, oak, and apple. My third and fourth are both the same. In the center of sorrow and twice in refrain. My fifth starts eternity ending here. My last is the first of last, Oh Dear.
Its title means book.
There are millions of me. I am very small but when moving fast I am deadly.
If lightning strikes an orchestra who is the one most likely to get hit?