This free add-on for Firefox and Internet Explorer gives jazz music lovers something to sing about. Jazz Radio is a toolbar that lets you tune in to radio stations worldwide that play songs from the genre.

The bar won't wow or disappoint you with its appearance. A few radio controls allow for fairly quick volume control and switches between stations. You'll have fast access to jazz stations in locations from the United States to the Netherlands, so you can listen to fusion, smooth, New Orleans, and big-band jazz, to name a few. None of the stations tested missed a beat.

With search functions rooted primarily in Google, quick links to music articles, reviews, and new releases are easy to reach. You can add other useful buttons to some Microsoft and Windows programs and then determine what will actually appear on your bar. Yahoo, Gmail, Hotmail, and POP3 users can get e-mail notifications, for example. Like others in this category, Jazz Radio has pop-up blocking and weather forecasting on the bar. Packed with useful features, jazz enthusiasts who don't need the glitz of newer music discovery methods and don't mind an old school UI won't want to pass this up.