Amorphous water-soluble calcium citrate salts having a mole ratio of calcium to citrate of less than 2. The apparatus includes: an image input unit receiving a plurality of input images from the outside; and a control unit receiving the plurality of input images when a shutter-release button select signal is input from the outside, selecting a clearest image from among the input images as a best image, and capturing the best image. The sprinkler also includes a closure assembly adjacent the outlet to occlude the outlet and a thermally responsive support means for maintaining the closure assembly adjacent the outlet. Each atomic music segment may include one or more notes that have a substantially common onset time, thus providing an essentially indivisible unit of music convenient for user interaction and control. In addition, the device may include the ability to store records for a plurality of individuals.