J.K. tenor saxophone - ST 90 Series IV - is made first of all for beginners. Manufacturer Julius Keilwerth is well known especially for unusual materials of which are his highest models built of such as nickel silver and coin silver. However, as I mentioned this instrument is dedicated to beginners and that´s probably the reason why this sax is made of regular yellow copper and has plastic buttons of fingerboard. Body and keys are twice gold-lacquered for longer durability. Key layout, form and …

colour of tone, intonation, response, thumb rest, auxiliary high F# key, mechanism for the left hand little finger, finish

sax mechanics setting-up, poorly scarfing of cork