Sharp wiki:
[icle is about the musical notation. For alternate uses, see Sharp (disambiguation).In music, sharp means higher in pitch. More specifically, in musical notation, sharp means "higher in pitch by a semitone," and has an associated symbol (), which looks somewhat like a "#" (number sign). The note C sharp is shown in musical notation in Figure 1. Under equal temperament, B sharp is the same as, or enharmonically equivalent to, C, and E sharp the same as F. There also exist double-sharps, which look like and raise a note by two semitones. Less often one will encounter half or three quarter, or otherwise modified, sharps.
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