Thanks, here is what I have:
SELECT sum(Timespend) as CY, (select sum(timespend) from tblmain where Period between DateAdd ("y",-1,[StartDate]) and DateAdd("y",-1,[EndDate])) as PY
FROM tblProducers INNER JOIN tblMain ON tblProducers.ProducerID = tblMain.ProducerID
where...