The primary problem of this study is to determine whether there is a significant relationship between the attitudes towards harmony courses and the piano playing habits of the students. In this study, a correlational survey model was employed. The population of this study consisted of students who are studying at music departments in Turkey during the academic year of 2019-2020 and the sample included 248 students from nine different universities and four different departments related to music (Music Education, Performance, Musicology and Turkish Music). For data collection purposes, the scale of attitudes towards harmony courses developed, the scale of piano playing habits developed and a questionnaire to determine the variables affecting students' habits and attitudes developed by the researcher were used. There is no significant difference found between the students' departments and their piano playing habits. The study revealed that students' piano playing habits varied according to their personal instruments.