Kala Brooklyn Green Archtop Tenor Uke with Electronic Pickup The Kala Archtop line has a classic jazzy look that is embellished with stylish F-holes. Inspired by authentic vintage styled guitars. One of many factors that sets the Kala archtops above all other F-hole style ukuleles on the market is in fact the arched top. Originally, a key feature of violin and now guitar and mandolin, an archtop instrument is a work of art. Not only does it take a skilled luthier to create, but it makes a louder punchier instrument. We've taken time and care to create the most authentic and superior ukulele of its kind.