Napster Inc said it has agreed to make its music subscription service available on several of Motorola Inc.’s mobile phones.

Napster said it has partnered with Schaumburg, Ill.-based Motorola to develop promotional efforts for North America, the United Kingdom and Germany designed to allow access to Napster’s 3 million-song library.

Several of Motorola’s music-enabled handsets will be compatible with the service, including the RAZR, ROKR Z6 and Z6m models. The companies will also explore bundled music options for retail purposes.

This deal comes less than three weeks after Napster announced a similar deal with AT & T; Inc. to provide AT & T; customers with a year’s worth of free, unlimited access to its “Napster To Go” mobile music service.

Shares in Napster were up 5 cents, or 1.2 percent, to $4.12 in afternoon trading Tuesday on the Nasdaq.