Locate a specific type of music widget that you want on the Web. Search, for example, for music web store widgets that let you sell music, piano widgets that let you play a virtual piano, or widgets that will let you play a group of songs. Locate the music widget maker button that is associated with the music widget you want and click it. Answer the music customization questions that the music widget asks and click the button that generates the music widget code. Copy the code that it generates and save it in a text file on your computer.
Follow the instructions to register for your Facebook account, then log in. Type "html" in the "Search" box at the top of your Facebook page Select "static html: iFrame Tabs" from the search results that appear.
Click the "Add Static HTML to a Page" button to install the iFrame tab on one of your Facebook pages. Select one of your Facebook pages from the list box.
Return to your main Facebook page. Click the "Welcome" button on the main page to activate the iFrame application. Observe that the page's code view is displayed for your page.
Paste in the code that the music widget supplied you with. Click the "Save and view tab" button to view your music widget on your page. Click either the "View your tab as a non-fan" or the "View your tab as fan" button.