A Musical Examination of Buddy Can You Spare A Dime

There was an interesting piece on NPR yesterday which was a musical analysis of Buddy Can You Spare A Dime -- a depression era song.  Even though my musical knowledge is pretty limited, I was able to get a lot of what the analyst was talking about.
I also didn't know that the lyricist for this song also wrote Over the Rainbow of Wizard of Oz fame.