Our amazing 21" traditional soprano ukulele combines selected fine basswood for the body, solid wood for the neck and blackwood for the finger board and bridge. With correct frets positing marked on 5th, 7th, 10th of blackwood fingerboard. The magnificent soprano ukulele features playable nylon string, easy keeping in tune nylon strings which stay in tune after playing for a while. Most string instruments initially need time to adjust to the climate and such. Continue tuning it every time if it goes out of tune, and eventually it will adjust. With the ukulele becoming popular again, especially amongst teenager, you can finally offer your child the opportunity to learn how to play the ukulele easily with our innovative and simple ukulele beginner's set. The sound of rosewood is characterized by a throaty low end, bright treble notes, and a scooped midrange.