An audio processor that extracts the basic component of one audio signal and then superimposes this element onto another signal. To do this, the first audio signal (a vocal for instance) is sent through a series of parallel signal filters that create a signature of the input signal, based on the frequency content and level of the frequency components. This set of filters is then used to process the second signal (a string ensemble.) The result is that the vocal imprint now modulates the string ensemble.