The aim of this research is to determine the level of instrumental self-efficacy of music teacher candidates and to determine whether their instrumental self-efficacy status differ according to different variables (individual instrument grade point average, number of solo performances, class, age) and also to investigate the relationship between some demographic characteristics of the music teacher candidates and the instrumental self-efficacy scale. The study group of the research consists of students of the Music Education Department of the Faculty of Education at Muğla Sıtkı Koçman University Education Faculty (N=107). In line with the purpose of the study, instrumental self-efficacy levels of the students were obtained by the "Instrumental Performance Self-Efficacy Scale" developed by Şeker (2016) and "Personal Information Form" prepared by the researchers. As a result of the reliability analysis applied to the data obtained from the "Instrumental Performance Self-Efficacy Scale" as the data collection tool of the study, it was found that the Cronbach's (1951) alpha coefficient of the 19-item scale was in the range accepted as excellent (α = ,931). According to the findings of the study, the average score of the item scores of the music teacher candidates on the instrumental self-efficacy scale was found to be above the average with 7.67. When the average scores of music teacher candidates on the self-efficacy scale were examined, it was concluded that male students scored higher than female students. One of the most important results of the study is that there is a significant positive relationship between instrument self-efficacy scale and individual instrument grade point average and solo performance at p <01 level.