I'm so far behind I can't hear the band. 

Describes a situation where one is woefully and comprehensively overdue with a task or work assignment. An older cliche presumably referring to a parade scenario lead by a marching band.

I'm never going to finish the page one graphic in time, I'm so far behind I can't hear the band.

I'm so far behind I can't hear the band. by olde matey May 3, 2016