Ever felt you didn’t know enough guitar chords ... This changes the pitch to F - so you get five new chords. Move up another ...

I’ve highlighted A for particular attention here because it’s such a nice key on the guitar ... nicely in a chord progression (both to your ears and on the fretboard) is an under-appreciated ...

I don’t think your fretboard will need oiling more than twice a year, and eventually, once a year." But a lot of the confusion around guitar lemon oil is due to assumptions about what it actually is.