The Chaipan marimba is a type of xylophone that is table-like in design. The two most basic types are the diatonic instrument, often called the marimba sencilla (simple marimba), a chromatic instrument of two keyboards that are somolar in configuration to those of a piano. On the top there are wooden slabs, commonly referred to as teclas (keys or bars). The suspension of the bars is made possible by drilling through catch bar at two nodal points that do not vibrate. A long rope is then placed though each hole, thereby connecting each bar consecutively, which in turn is strung through a suspension peg. Each suspension peg is fastened at its base to the instrument’s frame, permitting maximum freedom of vibration to enhance the tone.///// The teclas are graduated in size and suspended over open rectangular resonating chambers called cajones, which are quadrangular and hollow, open at the top and closed at the bottom in a pyramidal shape. The length of each cajon, along with its air volume, is carefully calibrated to precisely amplify acoustically calibrated to precisely amplify acoustically each tecla’s fundamental pitch, thus producing the optimum enchancement of tone. Directly over the closed bottom is a protruding piece of wax fastened over an aperture. Stretched over this opening is a thin sheath of pig intestine. This membrane vibrates sympathetically when the bars are struck, creating a buzzing effect. The number of keys and corresponding resonators are determined by the range of each particular instrument. From maker to maker the sizes and ranges of instruments vary; however, the full-sized chromatic instrument is usually six-and-a-half octaves (C to f5), while smaller chromatic instruments (called requinta) are usually less than five octaves but do not go below the second C on the full-sized instrument. In total the large instrument would have upwards of seventy-eight keys while the smaller marimba would have less than sixty.