Forbes reports that Microsoft is doing efforts to beat Apple's iPod in the online music market.
Microsoft's MSN music service began a free song promotion yesterday sponsored by American Express.
Visitors who buy music downloads with their American Express will receive free songs, while those who apply for an Amex Blue card through a link on the MSN site will get credits to download free music.
As the holiday shopping season nears, Apple is also stepping up its marketing efforts.
Last month, Apple and rock band U2 announced a deal to sell customized iPods.