Wow! So many, so quick!

Okay, there are 9 A's, 8 O's and 1 E!

--- -- a --- a ---a-- -oo- a-- -a------ -a-?
- -o-- --o- --- - -o --o- -- -- a -o-e --a- ---- -o- -a--.

*BaSim* - A(9) = 18
Fuzzy317 - O(8) = 16
Rottie - E(1) = 2

Letters left to choose from
B C D F G H I J K L M N P Q R S T U V W X Y Z