A-ha success with two more hit singles from the same album—"Train of Thought" and "Hunting High and Low" (with another innovative video) —and the band remained popular throughout the 1980s and early 1990s. The band's first album, 1985's "Hunting High and Low", became a worldwide bestseller, spending most of October and November in the top 20 of "Billboard"'s Top 200 album chart. The album and its four hit singles garnered international recognition for A-ha. "Hunting High and Low" earned triple platinum status in the UK, and reached platinum status in the US and Germany, while earning gold in Brazil and the
High- and low-level classification is typically more concerned with individual components within the system and how they operate. Features which emerge only at a high level of description are known as epiphenomena. Due to the nature of complex systems, the high-level description will often be completely different from the low level one; and, therefore, the (different) descriptions that each deliver are consequent upon the level at which each (differently) direct their study. For example, High- and low-level High-level and low-level, as technical terms, are used to classify, describe and point to specific goals of a systematic operation; and are applied in a wide