Alright, after a very confusing talk in IRC about keys, I've decided to ask here. How many keys are there, and what are they? I'm under the impression that there are twelve: A A# B C C# D D# E F F# G G# However, apparently there's minors and majors thrown in somewhere. For instance, in B flat, the placement of the two flats indicate that all B's and E's are considered flat unless marked with a natural sign. Is this a minor key or a major? Neither? If made into a minor or a major key, how does this affect the notes played? How do I know if ___ is a major or a minor key? Help is greatly needed and would be even more greatly appreciated.