BTW, I'd never seen anyone handle the going-off of a cell phone during a performance with such grace as Rebecca showed when that happened.  Shocking that people don't know to turn off their cell phones in an intimate cabaret setting.
How did she handle it? 
 I remember being excrutiatingly embarrassed when I forgot to turn off my cellphone and it went off during the middle of Pastor's sermon one Sunday... and 
of course  it was on the "loud" setting and
 of course  it was lost at the bottom of my bag and 
of course  I was sitting third pew center, right in front of the pulpit!  It seemed like hours before I could find the darn thing.   

While I searched for it my Pastor kindly regaled the congregation with the tale of when he forgot and left
 his cell phone on and it went off in the middle of a wedding. 
I always check my phone 2 or 3 times now to be sure it's off.!