Documentary 'Saul & Ruby, To Life!' follows founders of the Holocaust Survivor Band

When we meet the title characters in the film "Saul & Ruby, To Life!," Saul Dreier is in his early 90s and Ruby Sosnowicz is in his late 80s. The documentary, from Chicago-based filmmaker Tod Lending, is a chronicle of the pair's late-in-life music career as they form the Holocaust Survivor Band.

Both Saul and Ruby are retired in Coconut Creek, Fla. They met only a few years ago when Saul was inspired to start the band as a tribute of sorts, shortly after the 2014 death of the concert pianist Alice Herz-Sommer, who was among the oldest Holocaust survivors when she died at the age of 110.

Herz-Sommer was the subject of the 2013 Oscar-winning documentary short "The Lady in Number 6," and it seems fitting that Saul and Ruby have become the subjects of their own film, as well. Saul (who is now 94) plays the drums;