How Is This Done?

My son is a violinist/pianist/voca​list who's really interested in doing something like this:

https://www.youtube.co​m/watch?v=U7Vmr6WWeV8

Can anyone tell me how is this done? My son's been using this app called "Acapella" that he got from iTunes to accomplish something similar, but he wants to do something with better video and audio qualities. Many thanks in advance.

On the audio side this is near-pro quality multitrack recording and mixing.
On the video it's using some sophisticated editing techniques. Shooting isn't the best, but it isn't bad.

IMO the bar is fairly high. Find other people who are into audio and video?

It's quite possible/probable that the complete audio track was completed in a studio, then, he listened to playback in his headphones while lipsyncing, playing and singing the various parts. This is a common music video approach.

He lists his arsenal...

Equipment used:
NS Design Electric violin
Apogee Duet
Rode NT1-A
Macbook Pro
Logic Pro
Final Cut

Now all you need is the time, money, and talent to make it happen...

This is multitrack recording just as any music is recorded in a studio setting. Using an audio interface with atleast 2 inputs and outputs. A couple mics and a multi track recording software such as Logic Pro or pro tools. Pro tools being my favorite

Thank you all for kindly responding. I think this is way over my head. I don't need to do anything fancy, so is there any "simpler" way to accomplish such with just two or three video cameras and as many external audio recorders with any basic PC friendly software?

The "cheap and easy" way would be to use one camera with a good mic plugged-in to record audio and video for each "instrument" and "voice" track. Then use your video editor to import and sync all the clips, combine the audio tracks, and then select which video tracks you want to use and apply the desired effects (i.e., pip, multicam, cuts, wipes, etc...).

That's not necessarily going to give you the best quality though.

Just be sure to set down a rock solid beat first, so everything synchs.

Cool, I got try some time!