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Telling the story of the Gershwin brothers is a focused way of introducing children to the Golden Age of American Song.
In our classroom was a small poster that had a list of composers descending in a timeline starting with Bach. I was always pleased to point out the few Americans who made it there. Copland, Gershwin, Bernstein. (Well, they were from New York.) How refreshing to introduce the lyrics of Ira Gershwin to the children of today. (Let it go...).
Of course, there were a few tunes that were too hot to handle. One day, the principal saw a song sheet of "One More For My Baby". I had to tap dance like Fred Astaire to explain that one. Then we could never sing "Let's Do It", or "Love For Sale", to mention just a few. We did sing "Makin' Whoopee" one year.
The tradition we had was to focus on the jazz standards in 1st & 2nd grade. Nothing was more satisfying than having the class pick from an assortment of 20 songs we're working on and read the sheet music off the projector. Sometimes though, I would assemble 3-4 double sided sheets of songs for them to peruse at their desks, mostly in the 1st grade as we we're learning how to read.
Along with "Let's Call the Whole Thing Off" we especially enjoyed "Cheek to Cheek", "'S Wonderful", "Blue Skies" & "Let's Get Away From It All" to mention only a handful.