From the middle to the late eighteenth century, England prospered due to growing number of industries and revenues from foreign trade. Being economically available, people valued quality of lifestyle, including having amateur musical performances in social gatherings. Popular musical productions at the time, other than solo music, included also chamber music, such as accompanied keyboard sonatas. In these types of works, the performers could invite the guests to join in the performance, yet also demonstrating his or her own tastes and skills. František Kocžwara¡¦s (1750-1791) The Battle of Prague was one of the most favored piece of works by the English amateur musicians. Due to its moderate level of required performance skills and magnificent effect of the sounds, the amateur musicians were able to perform well in front of their guests, while bring the atmosphere of musical gathering to a high peak. This paper consists of three sections. The first section discusses the development of English music, its influences from local social factors, ands the rise of amateur musicians. The following section discusses the musical form which is mostly favored by amateur pianist in the late eighteenth century - accompanied keyboard sonatas - with depth into its historical background, social functions, and music arrangement. The final section discusses the life of Czech musician, František Kocžwara, and his accompanied keyboard sonatas published in 1788 The Battle of Prague. Through detailed description of the musical style and relationship between the main and the accompanying parts, a better understanding may be formed regarding the non main-trend composers and the elegant lifestyle of the English amateur musical life.