Sync audio when making a music video

Take this video:

It sounds like the music is recorded in a studio, and it´s also being sung when filming. How can you synch a 2 different recordings?

What if, when sung in studio, he sung it just a tad faster than in the car?

:huh: That is called playback. It seems that the song is playing from a USB stick from the car stereo and singer just sings along. In FCP X you synchronize or make a multicam clip to line up the shots and use just the "studio" sound.
Merry Christmas!

We take a studio recording, have an audio engineer or mixer place 4 beeps in time with the music at the beginning, and burned to a CD.

When we video the action, I can have several cameras going at one time. We will play that CD on the same boombox for every shot we take. That way, every camera has the same music recording on it. We turn the boombox up so every camera's built in mic is recording the song well enough. The band simply lip syncs to the boombox.

When we create a multiclip, FCP X sees the same audio on all camera angles, as well as the imported CD track. Poof!

On this music video they only used one camera, making the singer go through the song several time.

When done, how do you synchronize 5 different camera angles and the studio song?
Just use the synchronize function in FCPX? Mark every 5 angles + studio song and click synchronize?

As long as the track remained the same then you can synchronise with multi clip very easily

If the camera records the audio during every take, FCP X can sync the audio of the video clips, to the audio of the studio recording, into a multiclip, as state.

Here is the user manual section dealing with how this is done. It is a quick, easy read. Review it and you'll be just fine.
help.apple.com/finalcutpro/mac/10.0.6/#ver23c76439

I´m not sure I understand.

If I go through the song 5 times, letting the singer sing the song 5 times and all 5 times use the same camera and from different angles.
How do I deal with the change of angles?

I can´t synchronize all 5 camera shots and song into one shot. I need to synchronize song into 5 different clips.
How to I make a smooth transition when I want to change angles?
It´s kind a hard changing the angles. I mean... In the first clip(first angle) I end after 10 seconds. But to change to another angle(second clip) I can´t just start the second clip after 10 seconds. It doesn´t add up....

Read the multicam section of the user manual as I posted. Not just one page, the whole section.
help.apple.com/finalcutpro/mac/10.0.6/#ver10e087fd

A Multicam Clip lets you switch between angles, as if you have multiple cameras going through a switcher live. It syncs them all by the audio. Thus, each shot of the singer, band members, whoever, are recorded hearing the same music they're lip syncing to. Thus, easy sync in a Multicam Clip.

Learn about Multicam, it is exactly what you want.
www.macprovideo.com/tutorial/finalcutprox201-multicam-editing

BenB wrote: Read the multicam section of the user manual as I posted. Not just one page, the whole section.
help.apple.com/finalcutpro/mac/10.0.6/#ver10e087fd

A Multicam Clip lets you switch between angles, as if you have multiple cameras going through a switcher live. It syncs them all by the audio. Thus, each shot of the singer, band members, whoever, are recorded hearing the same music they're lip syncing to. Thus, easy sync in a Multicam Clip.

Learn about Multicam, it is exactly what you want.
www.macprovideo.com/tutorial/finalcutprox201-multicam-editing

I have read it, but I still didn´t understand.
But when you said "A Multicam Clip lets you switch between angles, as if you have multiple cameras going through a switcher live." I probably understood...

When you import the clips from your camera you will have several clips that represent the same section of song, only from different angles. Select those 4 or 5 clips in the event browser and then choose to "Make them a Multicam Clip". Choose to use the audio as reference for syncing them. Drag that multicam clip to the timeline.
Now in the viewer, change it to the angle viewer so you can see all those clips in their respective angle windows.
In your timeline, as you play back the multicam clip you can click in realtime on the proper angle in the angle viewer to make an instant cut to that camera angle.