Music mastering is essential in this age of highly competitive music industry. Mastering is necessary to fine-tune the song. What mastering does is to add depth and clarity to the song. It is the conditioning that makes the track ready for the market. The mastering engineer knows well how to compress the song without affecting the dynamics of the songs. The engineer plays with the music to bring out the best. Eq and compression is added wherever needed. However, there are some pre-requisites for the mastering to accomplish great heights. The song needs to be recorded in such a way that it is compressed optimally, without affecting the dynamics of the song. If the song is compressed too much, it may then be lost. Even mastering will not be able to restore the song. Mastering services are now available online as well. Online mastering services are quite easy to access. The music files are uploaded on the mastering site. These files are then worked upon by the mastering engineer to bring out the best sound. The online service of a mastering engineer is at par with that of the attended mastering. This is so because the online mastering services are performed using the same equipment and in the same environment as that of the attended mastering services. online audio mastering is affordable a well as easy to access. The service is a rage among the music frenzy generation, who is tech savvy and keeps seeking something new in every sphere.