Question: When is the composer of song Blah Blah Blah (Gershwin Song) 's birthday?
Sentence (from "Blah Blah Blah (Gershwin song)"): "Blah, Blah, Blah" is a 1931 song with music by George Gershwin, to lyrics by his brother Ira Gershwin.
Relevant evidence: Yes