 When the frog is released from the cornerstone, he starts singing  ragtime tunes such as "Hello Ma Baby", leading some observers to  speculate that he is singing tunes he remembers from before the time  he was placed in the cornerstone. In the "Looney Tunes Golden  Collection", the various commentaries and special features make this  point. However, not all the songs are from before the time he was  imprisoned, which according to the cornerstone and the documents  placed within, was April 16, 1892. (Since "The Michigan Rag" was  written for the cartoon, it can be credited as being older than  1892.) "Largo al factotum", "Come Back to Erin," and "Throw Him  Down, McCloskey" were written before the frogs supposed entombment  (in 1816, 1866, and 1890, respectively), while "Hello, Ma Baby",  "Wont You Come Over to My House," "Im Just Wild About Harry" and  "Please Dont Talk About Me When Im Gone" were written afterward  (in 1899, 1906, 1921, and 1930, respectively).