CNN
Several musical classics are joining the public domain, including “The Best Things in Life Are Free,” from the musical “Good News” (also famously the song to which the “Mad Men” character Bert Cooper departed the series); the Gershwins’ love song “‘S Wonderful”; songs from the Oscar Hammerstein musical “Show Boat” and, to the delight of frozen dessert lovers everywhere, “(I Scream You Scream, We All Scream for) Ice Cream.”