If I understand, I need a XLR cable (with male and female connectors) to go from the microphone into the mixer. What kind of cable would I need to then go from the mixer into the line-level, 1/4 inch input in the back of the digital piano? Would it be line-level 1/4 inch on both ends of the cable or would it have to be XLR on one end? As I understand, the signal or whatever, from the microphone, has to be converted into a line-level impulse to enable the vocals to go through the piano's amp. and to the speakers. Is the signal coming out of the mixer line-level. The piano has two line-level inputs in back and one can be used for another instrument, like a guitar. Ultimately, the signal has to be made into a line-level impulse. With respect to vocals, one guy on the Internet talked about using a voice processor (TC Helicon Live Voice) or a "D.I. box", that would make the signal line-level. Anyway, thanks again for the input--no pun intended. Gene