sentences:  Parkes' concert works, "Gettysburg Address", "Mississippi River Reflections" and "Gershwinesque" (as well as two vocal selections from his score to the musical, "Happy Birthday, Mr. President"), received their national premieres in concerts broadcast as part of the "Sundays At Four" radio series.Parkes contributed both music and lyrics to the musicals "Happy Birthday, Mr. President" (about Marilyn Monroe) and "Tanzi.