Hot answers tagged theory
No, it is still a B♭. The flat is just reminding you that the B is flat. This is typically done if the previous measure uses a B that was different then the one in the key signature or if there was a different quality of B used in the measure it is used to cancel out the other quality. In the key D minor, if you were ascending from A to D, a typical melody ...
The accidental ♭ does not combine with the ♭ in the key signature to produce a double-flat. Rather, the accidental is redundant. The easiest interpretation rule is that any accidental overrides whatever is in the key signature. The term for such usage is courtesy accidental: Although a barline is nowadays understood to cancel the effect of an ...
No it indicates B flat. Usually the flat is cancelling a natural (or sharp) earlier in the measure. Even if it's not cancelling, it has only been included by the editor to improve the readability of the passage.
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