The importance of music and its influence on people has been recognized since ancient times, and since then, its role and presence in education have been contemplated. In the Croatian education system, in the first three grades of elementary school, Music Culture as subject has been entrusted to primary education teachers. In addition to regular classes, teachers also conduct various extracurricular music activities. Music education is acquired in teacher training through theoretical, practical, and methodological knowledge. However, recent research indicates that many teachers highlight the lack of specialized education in the field of extracurricular musical activities. The area of playing instruments in music education, according to the curriculum, refers to playing instruments such as Orff's instruments, which most Croatian schools do not possess. Consequently, teachers are compelled to create their own instruments. Nevertheless, in the history of Croatian education, playing various instruments (tamburitza, melodica, harmonica, guitar, and mandolin) was nurtured in regular classes. However, nowadays, playing these instruments is not part of the regular curriculum but has been extended to extracurricular activities. This paper applies a comparative analysis of the representation of extracurricular music activities in European and Croatian schools. There is an observed lack of extracurricular music activities that involve group guitar playing. The guitar is one of the most popular instruments today due to its expressive capabilities, which attracts students of early school age. Therefore, the aim of this paper is to consider the possibility of introducing the extracurricular music activity "Group Guitar Class" in Croatian general education schools, as well as to offer a potential form of organization and implementation of such activities. The gradual introduction of all-day school provides an opportunity for conducting this activity. The time that students spend in school requires careful organization and fulfillment with extracurricular activities aimed at developing students' abilities and skills. Student involvement in extracurricular activities would ultimately lead to more available after-school time for students and their parents.