The music that we hear on the records undergoes many stages. The process of music creation involves stages like arranging, composing, recording and mastering. Mastering is the final stage of music creation. It is the process that adds the finishing touches to the music. Mastering involve procedures like fine-tuning the music components to make it sound, sweet and hummable. The volume is reduced and controlled to make it sound perfect. The minor nuances of the music are taken care of in the process of mastering. Mastering makes the track technically sophisticated by adding Eq and compression, wherever required. The music is tweaked to make it sound great. The background noises are reduced to minimum and the song quality is enhanced. If there is more than one track in the song, it becomes even more essential to do the mastering. Mastering synchronizes the gap between the sings. Mastering is the professional touch added to the music to make it market ready. Any track which is meant for commercial sale in the market needs to undergo mastering. This is to make it competitive. A mastered track is highly competent and stands out among the non-mastered ones. Mastering is usually considered not required by the musicians earlier but of late, the benefits of the mastering process has become so apparent, that the musicians now consider it as an indispensable process. Any musician serious about his music will not let go of the mastering process. Now the audio mastering is also available online. audio mastering online is highly relevant in today’s times of high competition and lack of time.