Cloud the bottom of the hierarchy. Clouds in the troposphere assume five physical forms based on structure and process of formation. These forms are commonly used for the purpose of satellite analysis. They are given below in approximate ascending order of instability or convective activity. "Non-convective" stratiform clouds appear in "stable" airmass conditions and, in general, have flat sheet-like structures that can form at any altitude in the troposphere. The stratiform group is divided by altitude range into the genera cirrostratus (high-level), altostratus (mid-level), stratus (low-level), and nimbostratus (multi-level). Fog is commonly considered a surface-based cloud layer. The fog may form
So Beautiful or So What Canaan, Connecticut. The music of "So Beautiful or So What" features West African blues-inspired guitar playing, Indian-style percussion, and experimentation with samples, which ranged from an excerpt from a 1941 sermon to nighttime ambience in Kenya. The songs were recorded with little bass but with a very large presence of bells. Much of Simon's lyrics touch on themes of spirituality and mortality, which Simon said was unintentional and resulted naturally in his songwriting process for the album. "So Beautiful or So What" received widespread acclaim from critics, many of whom considered it Simon's best work in two decades. It later