How much donations have been collected for project 'Whistle While We Work!'?
donations collected refers to sum(donation_to_project); project 'Whistle While We Work!' refers to title = 'Whistle While We Work!'
SELECT SUM(T2.donation_to_project) FROM essays AS T1 INNER JOIN donations AS T2 ON T1.projectid = T2.projectid WHERE T1.title = 'Whistle While We Work!'