Apple and the California Tree Fruit Agreement have teamed up to offer free music downloads from the iTunes Music Store with the purchase of California peaches, plums and nectarines. The number of songs to be given away has not been set, and in-store promotions are not expected until summer. “It’s a little difficult… to sell a message about health, and this is something just a little bit more fun,” said Marilyn Dolan, tree fruit spokeswoman. “We are hoping it’s something new and different enough that people will take notice.”