What the Numbers Mean. Many of the terms you see on labels or supplement web sites can help you understand how much of the vitamin or mineral you should take. The RDA (Recommended Dietary Allowance) and the AI (Adequate Intake) are the amounts of a vitamin or mineral you need to keep healthy and stay well-nourished.
Unless you have a Bosendorfer piano-then you have up to 97 Notes. ~If you have come here to find a key to unlock your piano please visit our online shop piano Keys and Locks department. For more information on piano keys and piano compass or visit our Piano Discussion Forums.
Piano, also called pianoforte, French piano or pianoforte, German Klavier, a keyboard musical instrument having wire strings that sound when struck by felt-covered hammers operated from a keyboard. The standard modern piano contains 88 keys and has a compass of seven full octaves plus a few keys. The vibration of the strings is transmitted to a soundboard by means of a bridge over which the strings are stretched; the soundboard amplifies the sound and affects its tone quality.