kala ka-bg mahogany baritone ukulele, natural, baritone kala right now, you're checking out the kala ka-sbg baritone ukulele. it's an unbelievable-looking baritone ukulele with a mahogany body for extremely warm and rich tone, plus a solid spruce top for exceptional volume and projection. kala also gave the ka-sbg quality die-cast tuning machines that help it stay right in tune. whether you're strumming in a hammock or recording in the studio, you'll be impressed with the great tone and playability of the kala ka-sbg! features solid spruce top mahogany back and sides rosewood fingerboard and bridge arched back baritone scale