With respect and reverence for the age-old traditions of drums and drumming, Remo offers the World Percussion Collection, designed to the specifications of eminent drum artist Mickey Hart for inclusion in his Signature Series of drums. Each drum features high-quality Remo pre-tuned or tuneable drum heads and Acousticon shells - stronger, lighter and acoustically superior to traditional wood-ply construction. The graphics on the heads and shells are created using state-of-the-art Photo Image technology, laminated between layers of protective film for permanence. The Ocean Drum is a unique two-headed drum with steel shot inside, producing ?ocean surf? sounds. It comes in two sizes.