How do you alter the metronome tempo to align it with an imported audio file's tempo?

I am trying to remix End of Time-Beyonce for the remix contest, and i would like to have the tempo of the metronome be in sync with the tempo of the song. That way, beat one of the metronome is on beat one of the song. How do I get this to happen?


Also, what is flextime--how does it work, where should I visit to learn?

GarageBand (Mac) '11, Mac OS X (10.7.3)

Posted on Feb 28, 2012 7:11 PM

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11 replies

Feb 28, 2012 11:14 PM in response to isiah1018

You don't need flex time for this kind of job.


Just vary the project's tempo until it fits. The way I do it: I cut out a piece of the song that is exactly 4 or 8 bars long (you don't lose anything doing that, you can drag out the edges again later) and then vary the tempo until the snippet fits exactly into that number of bars. That's assuming it has a constant tempo and an integer bpm number.

Feb 29, 2012 12:26 PM in response to Christoph Drösser

Ok. would you do me a favor and try this.


1. http://endoftime.beyonceonline.com/stems go here and download the drum stem

2. once download it, drag it to garageband.

3. create new project etc....now have the stem in garageband as a track,,,orange track

4.play the stem for a few seconds. notice the rhythm and beat.

5. now play the some of the beat with the metronome.



How do I get the metronome to match the beat.

I was thinking if there was a way to edit the grid where beat one starts on the garageband line indicated for beat one. Or can i edit one measure and push all the other measures down, with equal rhythm....do you get what i'm saying.

Feb 29, 2012 11:42 PM in response to isiah1018

I described my way of determining the tempo in my first post! Cut out a piece that's exactly four bars long and adjust the tempo until the snippet encompasses exactly four bars.


There's lots of other ways to determine the tempo: tap to the beat for half a minute, count the taps and double the number. I also have a bmp widget that you can use after you import the sound file into iTunes. But I find doing it directly in GB like I described to be the most exact method.

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How do you alter the metronome tempo to align it with an imported audio file's tempo?

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