Help :P Nutral sign, sharps, flats

Okay. I dont really got any problems but i must ask. Couse it varies from sheet to sheet how its done.

Ex: When it is written in the key f major, the H is flat (b)
And then the nutral sign shows infront of a H.. When do I know when it is suposed to be playd as a flat again.
In some the nutral, sharp or flat last 1 bar. In another, it lasts troughout all the bars in that row. And in some it last until it is marked with a (b) no matter how long it takes... Why cant they just use the lasting for 1bar. So much easyer!!!
That IS the correct theory! Isnt it

thomandy wrote:Okay. I dont really got any problems but i must ask. Couse it varies from sheet to sheet how its done.

Why cant they just use the lasting for 1bar. So much easyer!!!
That IS the correct theory! Isnt it

Yes, any accidental only lasts until the bar is finished, UNLESS the natural is put into the key signature, such as if there is a key signature change, but those are much more rare than accidentals

Admin Andrew wrote:

thomandy wrote:Okay. I dont really got any problems but i must ask. Couse it varies from sheet to sheet how its done.

Why cant they just use the lasting for 1bar. So much easyer!!!
That IS the correct theory! Isnt it

Yes, any accidental only lasts until the bar is finished, UNLESS the natural is put into the key signature, such as if there is a key signature change, but those are much more rare than accidentals

Yeah, then its irritating to read sheetmusic that doesnt follow the rules =)
But in the one i read now its by the book. Seen 3 different ways you see, little bit confusing.