The extensive Book G4 - Fifth position follows the key principles of Colourstrings methodology - the use of natural harmonics and constant developing of inner hearing for instance - but it can be fully utilised also without any previous use or knowledge about the Colourstrings method. The innovative and unique visual presentation of the “house of the positions” and preparatory exercises for the challenging passages help the young and older students to fully understand, why and where the different positions are needed.