Recently, Sara Bareilles made technical difficulties a little less difficult. The singer jumped on stage to perform an impromptu concert when the Broadway show she wrote, Waitress, had to be held mid-performance. Bareilles spontaneously made her Broadway debut and performed a cut song that didn't make it into the final version of the show.

When Bareilles forgets the words, a cast member from behind the pie-printed curtain chimes in to finish out the verse.

Sources: Broadway World