A song is developed when it goes through a series of stages. The first stage of song making is the composing and the adding of lyrics. Once that is done, the song is recorded and mixed inside a studio. This leads to the cutting of tracks. The last step is that of mastering the song. Mastering is necessary, as it adds a great deal of value to the song. The value is in the form of finesse and polish that is evident in any professionally mastered track. The song which has undergone mastering services sounds better on radio. The services of a mastering engineer are highly important for the music industry, which is becoming highly competitive. The mastering engineer offers his skills and ability to make the song clearer, louder and more professional. The mastering engineer puts the song through a series of equipments that make it sound different. The whole song is heard by the mastering engineer who will find out the ways of making it sweeter and better. When there is more than one song in an album, the mastering engineer fixes the gap between the sings, levels the volume of each track and adds consistency in the albums. Mastering is usually done for two reasons, which could be for corrective measures or for enhancing the sound of track. Mastering brings out the effect of every musical instrument, by reducing the noise in the background. The music mixing mastering services are now available online as well. The audio files to be mastered are uploaded by the customers who are sent back the link to the mastered audio track or the CD.