Classical guitar composers wrote mostly in tablature notation. In the middle of the 16th century, influences from the vihuela and the renaissance guitar were combined and the baroque five string guitar appeared in Spain. The baroque guitar quickly superseded the vihuela in popularity in Spain, France and Italy and Italian players and composers became prominent. In the late 18th century the six string guitar quickly became popular at the expense of the five string guitars. During the 19th century the Spanish luthier and player Antonio de Torres gave the modern classical guitar its definitive form, with a broadened body, increased waist curve,
Classical guitar making outer construction itself (such as chosen bracing): ""As my skill and experience have grown I have come to believe that what makes a good guitar good is firstly how well fine tuned and balanced it is rather than what type of strutting system it is built with. Different strutting systems can add different flavours to the sound but is never the main factor in the Good Guitar."" (Per Hallgren) One of the important aspects that good luthiers need to understand, is that a single tone consists of the "fundamental and simultaneous overtones". (Historically the scientific analysis of this discovery can