A system, comprising: a memory storing computer executable components; and a processor configured to execute the following computer executable components stored in the memory: an identification component that identifies a sound recording in a mixed audio recording; a first subtraction component that determines a local linear transformation of the sound recording and subtracts the local linear transformation of the sound recording from the mixed audio recording to generate a new mixed audio recording; characterized in that the system comprises: a second subtraction component that compares one or more segments of the sound recording with one or more corresponding segments of the new mixed audio recording and adjusts a power level of the new mixed audio recording based at least in part on correlation of the one or more corresponding segments with the one or more segments, wherein adjusting comprises selectively reducing the power level as a function of the correlation to remove the sound recording from the new mixed audio recording, and wherein the correlation is a spectral correlation. a memory storing computer executable components; and a processor configured to execute the following computer executable components stored in the memory: an identification component that identifies a sound recording in a mixed audio recording; a first subtraction component that determines a local linear transformation of the sound recording and subtracts the local linear transformation of the sound recording from the mixed audio recording to generate a new mixed audio recording; characterized in that the system comprises: a second subtraction component that compares one or more segments of the sound recording with one or more corresponding segments of the new mixed audio recording and adjusts a power level of the new mixed audio recording based at least in part on correlation of the one or more corresponding segments with the one or more segments, wherein adjusting comprises selectively reducing the power level as a function of the correlation to remove the sound recording from the new mixed audio recording, and wherein the correlation is a spectral correlation. an identification component that identifies a sound recording in a mixed audio recording; a first subtraction component that determines a local linear transformation of the sound recording and subtracts the local linear transformation of the sound recording from the mixed audio recording to generate a new mixed audio recording; characterized in that the system comprises: a second subtraction component that compares one or more segments of the sound recording with one or more corresponding segments of the new mixed audio recording and adjusts a power level of the new mixed audio recording based at least in part on correlation of the one or more corresponding segments with the one or more segments, wherein adjusting comprises selectively reducing the power level as a function of the correlation to remove the sound recording from the new mixed audio recording, and wherein the correlation is a spectral correlation. a second subtraction component that compares one or more segments of the sound recording with one or more corresponding segments of the new mixed audio recording and adjusts a power level of the new mixed audio recording based at least in part on correlation of the one or more corresponding segments with the one or more segments, wherein adjusting comprises selectively reducing the power level as a function of the correlation to remove the sound recording from the new mixed audio recording, and wherein the correlation is a spectral correlation.