Movie studio Disney has added its classic movie soundtracks to films such as Mary Poppins to Apple's iTunes music download service.
Music from Disney/Pixar films will be available
Music from movies including recent Pixar hits Toy Story and Finding Nemo will be available exclusively on the site until September.
After that, they may also be available on other online retail sites.
Apple's service is run by Steve Jobs, who also runs Pixar Studios - which recently broke off a deal with Disney.
Other soundtracks available on the Disney page within the iTunes Music Store will include the soundtracks from animated films such as Alice in Wonderland, The Lion King, Snow White and The Little Mermaid.
Mr Jobs said: "Now iTunes users can add these timeless Disney songs to their music libraries and enjoy them wherever they go on their iPods.
"This exclusive access to the classic songs from films like The Lion King, Toy Story and Mary Poppins, to name just a few, is going to make many of our iTunes users very happy."
Apple is currently the leading player in online music, with more than 50 million songs bought from Apple's iTunes music store so far.
The company launched its online music store for Mac users in April 2003 and expanded it to Windows users six months later.
David Agnew, executive vice president and general manager of the Buena Vista Music Group (BVMG), who oversees Walt Disney Records, said: "We are proud to offer a way for customers to easily own the classic and contemporary Disney music they know and love."