Argentine rock (locally Rock Nacional), is composed or made by Argentine bands or artists, in the Spanish language. For nearly half a century it has been a major popular genre, and it is considered part of the popular music tradition of Argentina alongside Argentine Tango, and Argentine folk music.

The moment when Argentine rock began as a distinct musical style can be traced to the middle 1960s, when several garage groups and aspiring musicians began composing songs and lyrics that related to local social and musical themes. Rock & Roll itself, however, began in Argentina almost a decade before. During that time until the rise of Argentine rock, local groups recycled the hits of English-language rock & roll. Since then, Argentine rock started a continued and uninterrupted evolution through the 1970s and into the 1980s, when it turned into an international genre. Today it is widely considered the most prolific and successful form of Rock en Español, and one of the most important non-English language forms of rock music in the world. In Argentina it is known as "Rock Nacional" (/rok.nasjo'nal/), literally National Rock (not in a political way at all but as a local movement).

Lady Macbeth is a fictional character in Shakespeare's Macbeth (c.1603–1607). She is the wife to the play's protagonist, Macbeth, a Scottish nobleman. After goading him into committing regicide, she becomes Queen of Scotland, but later suffers pangs of guilt for her part in the crime. She dies off-stage in the last act, an apparent suicide.

The character's origins lie in the accounts of Kings Duff and Duncan in Holinshed's Chronicles (1587), a history of Britain familiar to Shakespeare. Shakespeare's Lady Macbeth appears to be a composite of two separate and distinct personages in Holinshed's work: Donwald's nagging, murderous wife in the account of King Duff, and Macbeth's ambitious wife in the account of King Duncan.

Lady Macbeth is a powerful presence in the play, most notably in the first two acts. Following the murder of King Duncan, however, her role in the plot diminishes. She becomes an uninvolved spectator to Macbeth's plotting, and a nervous hostess at a banquet dominated by her husband's hallucinations. Her fifth act sleepwalking scene is a turning point in the play, and her line, "Out, damned spot!," has become a phrase familiar to most speakers of the English language. The report of her death late in the fifth act provides the inspiration for Macbeth's "Tomorrow and tomorrow and tomorrow" speech.