How do I transfer a musical keyboard recording from a microphone onto a computer webcam (no mic included)?
Computer should handle it. You should have places in the computer to plug in a microphone so. Plug microphone to keyboard and keyboard to computer. Next the webcam should have a usb plug and that means just pick one on the computer. However if your usb plugs are all in use on computer you will need to get to get more plug space by buying an extension with more sockets.