We need more information for this one, please.
Answer:
Midi Synthesizer, Mic,Boom Mic, Laptop
Explanation:
At the end of the day a keyboard and a pc is all you need as the keyboard alone can cover nearly any instrument.
Answer:
Yes
Explanation:
Because keyboard and mouse are external hardware and not inside the CPU cabinet but hardwares such as heat sink, sound card and graphic card are external hardware.