37. A computer-readable storage medium having a computer-readable program embodied therein for directing operation of a portal for processing music contributions over a network including a collaboration unit, the collaboration unit including an editing unit, an output generation unit, and a network interface unit, the computer-readable program including computer executable instructions for processing of a music contribution in accordance with the following: receiving the music contribution at the portal, the music contribution comprising a set of music elements and the portal being accessible over the network; receiving a collaboration request over the network from a user workstation, such that the collaboration request relates at least in part to the music contribution, wherein the set of music elements identify components of the music contribution relative to a recorded performance at multiple time intervals within the music contribution; and generating music output at the portal relating to at least a portion of the music contribution and in response to the collaboration request; wherein at least one collaboration request relates to the set of music elements; and wherein the set of music elements define musical parameters of the music contribution relative to a recorded performance at multiple time intervals within the music contribution.
37. A computer-readable storage medium having a computer-readable program embodied therein for directing operation of a portal for processing music contributions over a network including a collaboration unit, the collaboration unit including an editing unit, an output generation unit, and a network interface unit, the computer-readable program including computer executable instructions for processing of a music contribution in accordance with the following: receiving the music contribution at the portal, the music contribution comprising a set of music elements and the portal being accessible over the network; receiving a collaboration request over the network from a user workstation, such that the collaboration request relates at least in part to the music contribution, wherein the set of music elements identify components of the music contribution relative to a recorded performance at multiple time intervals within the music contribution; and generating music output at the portal relating to at least a portion of the music contribution and in response to the collaboration request; wherein at least one collaboration request relates to the set of music elements; and wherein the set of music elements define musical parameters of the music contribution relative to a recorded performance at multiple time intervals within the music contribution. 39. The computer-readable storage medium of claim 37 , further comprising: receiving the music contribution at the portal, the music contribution comprising an audio signal; and deconstructing the audio signal to generate at least a portion of the set of music elements.