The layout of the guitar fretboard is such that the same pitch can be produced at multiple points on different strings. Knowing where these ‘unison’ notes reside is an essential part of learning the logic of the fretboard and extremely useful when navigating the guitar and eventually finding the notes you are looking for. The locations of the unison notes on the guitar are made slightly more complicated due to its asymmetrical tuning. The strings are tuned ‘EADGBE’, which means the lowest four strings are 4th interval apart, but the third and second strings are a 3rd apart; finally the second and first strings are again tuned to a 4th. This means that unison notes are always found five frets apart, except for the third and second strings which are always four frets apart in conventional guitar tuning.