Kala Exotic Mahogany Concert Ukulele The Exotic Mahogany series from Kala is only a few bucks away from the standard mahogany series and has a wonderful look with black binding and figured golden brown mahogany. The sound is crisp and voiced very nice. For this price we could not recommend a better concert ukulele! We love our ability to share these fine instruments, and we want you to get a great ukulele! This one is a hard to beat value.