allllec said:
Okay 12 notes in the musical spectrum. those that are listed. so what is Bb for example? is it not a note or what? and if A# = Bb then when do you say one and not the other?
I believe when you say one rather than the other, it is relevent to what context you are using in relation to a scale or key.
Did you know that the difference bewteen the major and minor scale is only three notes, despite sounding totally different? Each scale has eight notes, but the third note, sixth note and seventh note of the scale is dropped by a semitone (Thats one fret to a guitarist). As such, it is possible to consider the major and minor scales as the following:
Major scale: 1 2 3 4 5 6 7 8
Minor scale: 1 2 3b 4 5 6b 7b 8
Getting more technical than I would want to here... the major scale is sometimes refered to as the ionian, whilst the minor is refered to as the aeolian. There are others with fancy names such as the Lydian, which looks like this in comparison to the major scale:
Lydian scale: 1 2 3 4# 5 6 7 8
Notice how the 4th note of the scale is sharp (a semitone or fret higher) compared to the major scale. It is therefore logical to call the note sharp in this situation.
As such, I hope that explains why sharps and flats are called such in different situations, despite being the same note.
However, as far as you should be concerned, they are exactly the same thing. Thats how I consider them anyway. Its just the context of when you are using them, which to be honest is not something worth thinking about.