[Sam Lesante Jr.]"I wanted to know if this song by Shirley Temple is still copyrighted."
Public domain music is any piece of music composed before (or an arrangement created before) 1922.
"On the Good Ship Lollipop" was written after that, in the 1930s.
Even if a piece of music is thought to be in the public domain, you still have to be very careful. Public Domain status applies only to the original composition. Any arrangements of the piece that were created by that time are still protected.
And of course, this applies only to the published score (the "sheet music," as it were). Any recordings/performances of the piece also have their own copyright protection, regardless of whether it is in the public domain or not. For example, while a Beethoven symphony is obviously in the public domain, the recording you might have of the London Philharmonic performing it is not.
Fantastic Plastic Entertainment, Inc. fantasticplastic.com
That sucks. But it is the law. What we need to do is get the law changed: get mad and write your congressperson that this situation is barbaric and archaic and we need a new solution that's legal and fair.