An "Archtop" is a type of guitar characterized by its curved top and back, which enhances its acoustic properties. This design allows for greater resonance and volume, making it popular in genres like jazz and blues. Archtops typically feature a hollow body and are often equipped with a floating pickup for amplified sound. These guitars can be made from various woods, with maple and spruce being common choices for the top and back. The unique shape and construction of archtops contribute to their distinctive tone, making them a favorite among musicians such as Charlie Christian and Django Reinhardt.