Remo's Arthur Hull Standing Ngomas are pitched between the djun-djun and djembe. The Ngoma drums are equipped with the Mondo Nuskyn drumheads for a comfortable sound, feel and warmth with reduced overtones. The Key-Tuned system makes the drum easy to tune, and the head easy to replace All Arthur Hull Signature drums are manufactured with Remo's proprietary Acoustic on shell material. This advanced drum shell material has excellent projection capabilities and enhanced low-pitched fundamentals. Added benefits are strength, weather-resistance and reduced weight.