The Darbuka, or Goblet Drum is a hand drum with a goblet shape used mostly in the Middle East, North Africa, and Eastern Europe. Its thin, responsive drumhead and resonance help it produce a distinctively crisp sound. Traditionally, goblet drums may be made of clay, metal, or wood. Modern goblet drums are also sometimes made of synthetic materials, including fiberglass. Modern metal drums are commonly made of aluminum, either cast, spun, or formed from a sheet, or copper. Some aluminum drums may have a mother-of-pearl inlay, which is purely decorative. Traditional drum heads were animal skin, commonly goat and also fish. Modern drums commonly use synthetic materials for drum heads, including mylar and fiberglass.