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There are countless examples of Heart’s greatness to choose from, but these clips represent some of the high-water marks.

Nancy Wilson plays the instantly identifiable galloping rhythm to "Barracuda" on her tricked-out Gibson SG with the phase effect on full tilt.

Early footage of Heart playing their first hit, "Crazy on You," in 1977. Nancy Wilson's classically inspired fingerpicked intro (played here on an Ovation) is extended out to a full minute before she kicks into the verses.

Nancy stands alone at center stage to begin perhaps the scariest cover song you could ever cover anywhere—let alone when Page, Plant, Jones, and the President of the United States are in the crowd. (Just try to keep that lump out of your throat when the choir kicks in at 4:24—because you can plainly see that Plant can’t.)