Certain flutes and ocarinas are very nearly without overtones. "Ocarina of Time" was so well received that sales increased for real ocarinas. Unlike many flutes, ocarinas do not rely on pipe length to produce a particular tone. Many of the figurines of this period function as flutes, whistles, and ocarinas. As a result, ocarinas and other vessel flutes have a distinctive overtoneless sound. Shepherd's whistles, bosun's whistles, and ocarinas can also be made as pendants. Occasionally, woodwinds are made out of earthen materials, especially ocarinas. Also musical instruments such as ocarinas were made of ceramics. The score also requires 50 ocarinas from the choir at various tunings. Some of these figurines are ocarinas and may have been used in rituals. The game was credited with increasing sales of ocarinas. One of the oldest ocarinas found in Europe is from Runik, Kosovo. Ocarinas, large bottles, and alcarrazas, double spout and bridge vessels, become common. Molinukai are Lithuanian ocarinas, made in the shape of a tube or a toy figure.