The June 22, 2018 tip covered how to make mastered songs better with tempo changes, but there was some pushback because it wasn't easy to make these kinds of changes in Studio One. Fortunately, it seems like the developers were listening, because it's now far easier to change tempo. I've been refining various tempo-changing techniques over the past year (and had a chance to gauge reactions to songs using tempo changes compared to those that didn't), so it seemed like the time is right to re-visit this topic.
WHY TEMPO CHANGES?
In the days before click tracks, music had tempo changes. However, with good musicians, these weren't random. After analyzing dozens of songs, many (actually, most) of them would speed up slightly during the end of a chorus or verse, or during a solo, and then drop back down again.
For example, many people feel James Brown had one of the tightest rhythm sections ever-which is true, but not because they were a metronome. There were premeditated, conscious tempo changes throughout the song (e.g., speeding up during the run up to the phrase papa's got a brand new bag, in the song of the same name, then dropping back down again-only to speed up to the next climax). Furthermore, the entire song sped up linearly over the course of the song.
Note that you didn't hear these kinds of changes as something obvious, you felt them. They added to the tension and release inherent in any music, which is a key element (along with dynamics) in eliciting an emotional response from listeners.
THE PROBLEM WITH TEMPO CHANGES
It was easy to have natural tempo changes when musicians played together in a room. These days, it's difficult for solo artists to plan out in advance when changes are going to happen. Also, if you use effects with tempo sync, not all of them follow tempo changes elegantly (and some can't follow tempo changes at all). Let's face it-it's a lot easier to record to a click track, and have a constant tempo. However
THE STUDIO ONE SOLUTION
Fortunately, Studio One makes it easy to add tempo changes to a finished mix-so you can complete your song, and then add subtle tempo changes where appropriate. This also lets you compare a version without tempo changes, and one with tempo changes. You may not hear a difference, but you'll feel it.
As mentioned in last year's tip, for the highest possible fidelity choose Options > Advanced > Audio, and check Use cache for timestretched audio files. Next, open a new project, and bring in the mixed file. Important: you need to embed a tempo, otherwise it's not possible to change the tempo. So, open the Inspector, and enter a tempo under File Tempo. It doesn't have to match the original song tempo because we're making relative, not absolute, changes. Also choose Tempo = Timestretch, and Timestretch = Sound - Elastique Pro Formant.
MANIPULATING THE TEMPO TRACK
Working with the tempo track is now as easy as working with automation: click and drag to create ramps, and bend straight lines into curves if desired. You can set high and low tempo limits within the tempo track; the minimum difference between high and low Tempo Track values is 20 BPM, however you can change the tempo track height to increase the resolution. The bottom lines it that it's possible to create very detailed tempo changes, quickly and easily.
So what does it sound like? Here are two examples. The first is a hard-rock cover version of Walking on the Moon (originally recorded by The Police, and written by Sting).
The differences are fairly significant, starting with a low of 135 BPM, going up to 141 BPM, and dropping down as low as 134 BPM.
https://youtu.be/ivXWaWW9e74
Here's another example, a slower song called My Butterfly. It covers an even greater relative range, because it goes from a low of 90 to a high of 96 BPM. You may be able to hear the speedup in the solo, not just feel it, now that you know it's there.
https://youtu.be/dgkhB9eo1dw
Note that when possible, there's a constant tempo at the beginning and end. It doesn't matter so much with songs, but with dance mixes, I can add tempo changes in the track as long as there's a constant tempo on the intro and outro so DJs don't go crazy when they're trying to do beat-matching.
So is it worth making these kinds of changes? All I know is that the songs I do with tempo changes get a better response than songs without tempo changes. Maybe it's coincidence but I don't think so.
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The June 22, 2018 tip covered how to make mastered songs better with tempo changes, but there was some pushback because it wasn't easy to make these kinds of changes in Studio One. Fortunately, it seems like the developers were listening, because it's now far easier to change tempo. I've been refining various tempo-changing techniques over the past year (and had a chance to gauge reactions to songs using tempo changes compared to those that didn't), so it seemed like the time is right to re-visit this topic.
