According to the Harry Fox Agency, a Mechanical License grants to the user the rights to reproduce and distribute copyrighted musical compositions on CDs, records, tapes, ringtones, permanent digital downloads (DPDs), interactive streams, and other digital configurations supporting various business models. In exchange for the permission to do so, licensees pay a statutory rate to the copyright owner(s) per reproduction.

Practicing And Performing Music
There is a perception that performing and practicing music are two very different activities. I think that the relationship between performing and practicing is deeply intertwined and at a certain level the distinction between the two virtually disappears.

