The “CW” stands for “cutaway,” which kawai ns 15 upright piano means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.The “S6 Slim” kawai ns 15 upright piano refers to the guitar’s slim profile, which makes it comfortable to play, especially for players with smaller hands. The “CW” stands for “cutaway,” which means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.The “S6 Slim” refers to the guitar’s slim profile, which makes it comfortable to play, especially for players with smaller hands. The “CW” stands for “cutaway,” which means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.The “S6 Slim” refers to the guitar’s slim profile, which makes it comfortable to play, especially for players with smaller hands. The “CW” stands for “cutaway,” which means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.The “S6 Slim” refers to the guitar’s slim profile, which makes it comfortable to play, especially for players with smaller hands. The “CW” stands for “cutaway,” which means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.The “S6 Slim” refers to the guitar’s slim profile, which makes it comfortable to play, especially for players with smaller hands. The “CW” stands for “cutaway,” which means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.The “S6 Slim” refers to the guitar’s slim profile, which makes it comfortable to play, especially for players with smaller hands. The “CW” stands for “cutaway,” which means that the guitar has a portion of the body cut away to allow for easier access to the higher frets.