The main aim of this paper is to offer a new harmony learning method on guitar, describe the development of an application which contains an explanation of the new harmony learning method and to test the new harmony learning method along with the application on six candidates-guitarists. The methods used in the paper are: literature desk research method, modelling method and in-depth interviews carried out on six candidates in order to gain insight into the extent and the way this harmony learning method was of use to candidates and to get information about how it helped them in learning, as well as obtain the candidates’ perception of harmony learning method which uses the mobile application. The analysis of the candidate interview answers shows that the candidates found the learning by means of the new method useful in many ways. All six candidates rated the method as A. Their answers also show that learning by means of the new application suited them and they describe it as practical, simple to use and they had no difficulties during its use nor in dealing with the harmony learning method. In the process of this paper production it was established that the harmony learning method described in it has a great potential for further educational use along with the learning concept of mobile applications utilization, which has a potential of ever greater application in the future.