There are now more full text link options for the International Index to Music Periodicals (IIMP) and the International Index to the Performing Arts (IIPA) databases. If the full text of an article is available directly from one of those sources you'll still see "Full text" or "Full text-PDF" links. If the article is potentially available from another online source you'll see the blue "Discover UIUC Full Text Linking" button. If you click on it you will be given other options to locate the item online or request it via InterLibrary Loan.
If you have any questions about this, just stop by the MPAL and let us know!