Despite being a little divulged issue both publicly and within the musical class, is high the number of musicians who suffer from pains, discomforts and even injuries and other health problems associated with the musical activity. About this, have been observed in recent decades, a growing interest from researchers, especially in the health area, which means there is already a considerable literature on the subject. However, there are still many knowledge gaps that need to be filled in order to make the musical practice (professional or not) less harmful.This study, which has an exploratory character, investigates this issue with a sample of 39 instrumentalists from Manaus, emphasizing the emotional aspects involved in the practice and how they can interfere in the perception of the constraints of these individuals. One of the main points discussed is that musical practice would be a favorable situation to occurrence of flow state (CSIKSZENTMIHALYI, 1997) what could justify the fact that many musicians don’t even realize the pain and injuries during the execution of the activity. It was applied at these respondents an instrument of data collection consisted on four parts: a questionnaire with general information about musical practice and constraints; a process of ordination of cards containing emotions/feelings involved in the practiced; a series of assessments scales about the flow state and about the dedication culture that exists in the musical environment; and a final interview seeking for more deeper opinions from musicians about the issue. The collected data were crossed and analyzed and the results indicate, among other conclusions, that musical practice from this sample, has similar characteristics from other where flow state is found, and still contain the importance of emotional matters in the practice, according to the participants musicians.