Apple lists hundreds of other bands but sometimes offers only older albums or selected tracks.

Many schools offer several possible tracks of architectural education.

The company will eventually offer tracks with Madonna's own voice.

The group said it was removing its work from iTunes because of that service's ability to offer single tracks.

It has also proved resistant so far to offering isolated unencrypted tracks.

And it also offers tracks in liberal arts.

The elementary and middle/high school divisions offer English and Chinese tracks.

The school offers difficult honors tracks in science, math, English, and history.

Wired magazine has offered unmixed tracks by several bands for similar use.

At launch, Beatport offered tracks from 79 electronic music labels to customers worldwide.