I was working on a chord transition from an open Am to a barre F the other day, and as usual got bored with just jumping back and forth so I decided to try to work some other barre chords in as well within a key signature of G. OOPS, the F should be sharp....

I found that doing the progression correctly didn't sound quite right. I tried it on several different guitars all tuned correctly and still I came to the same conclusion that it sounded best in the way that I played it and it doesn't fit into any key signature that I know of. It may be closest to the key signature of C, but the B should be diminished.

The sequence went as follows. open Am - barre F - barre G - barre C - barre Bm - open Am.

Is there an explanation why this works. The sequence does seem to work regardless of the rhythm I put to it. Maybe it only sound right to just me...