My rhythm guitarist seems to be playing some sort of an F chord (I believe) in a song, and I can quite pick out what scale to use under it. He plays the F chord (the rudiamentary one you 1st learn on guitar, but picks his middle and ring fingers up). In other words, he plays the F note on the high E string, the C on the B string, and he plays both the D and G strings open. The low E and A string are not strummed. I have been playing a groove that fits with the drummers kick in F major, but I am not so sure that this is the best choice. Anyone know what type of chord this may be, or what other scale choices could be used? Thanks.