The purpose of the study is to substantiate the fact that such standardized forms as the symphony orchestra and the orchestra of Russian folk instruments have become important points for the creation of a guitar orchestra but not an expanded group of guitarists. The article presents the parameters of the formation of symphony orchestras, which were also the basis of the guitar orchestra; describes the historical forms of collective music making, starting with the Neapolitan orchestra, in which the guitar played an exclusively accompanying role for a long time; the influence of the mandolin on the functioning of the guitar in the orchestra is shown; the specific organizational characteristics of amateur guitar playing and professional guitar orchestra are determined. As a result, the author comes to the conclusion that today the repertoire for a guitar orchestra is limited and, as a rule, is represented by arrangements of those few works that were written specifically for a hypothetical guitar orchestra.