T-SQL (SS2K8) :: How To Add Manual Column Based On GroupBy For Title

I have a query to get data group by High, Medium and Low so only three rows will be returned.

select
sum(case .... ) then 1 else 0 end) as [Column1],
sum(case .... ) then 1 else 0 end) as [Column2],
sum(case .... ) then 1 else 0 end) as [Column3]
from sometable
Group by High, Medium, Low

I want to manually add High, Medium and Low to each row's first column. the final result should look like:

Column1 Column2 Column3
High 123 123 123
Medium 123 123 123
Low 123 123 123

How can I do it?