The provided article text does not contain any actual content from the piece — only website navigation elements (menu items such as "Music", "Film", "Travel", "Art", "News", "Shop", "Mailing List") and an unrelated "Cover Story" link, rather than the body of the article about ZZ Top's sampling history.

As a result, there is no substantive information available to summarise regarding which unexpected sample appears in ZZ Top's catalogue, the track involved, or the artist responsible for it. To provide an accurate summary, the full article text would need to be supplied.