From Loop to Finished Track

Almost every producer knows this situation: an eight-bar loop that sounds great, that you listen to for hours, and that never became a track. The problem isn't talent. You're simply missing a method for getting from eight bars to three minutes. The theory you've learned gives you exactly that method, because it tells you what you can change without breaking what works.

The starting point: a loop that works

Let's take an original loop in A minor, at 120 BPM. Four chords, Am, F, C and G, that is, i, VI, III and VII, go around twice to fill eight bars. A bassline follows the roots, a kick and a clap hold the rhythm, and we can imagine a little synth melody on top.

Before you touch anything, take an inventory of what it contains: the drums, the bass, the chords, the melody. Those are your building blocks. Every section of the track will be this same loop with blocks taken out, blocks added, or blocks slightly changed. That's what gives a track its unity: you recognize the same music from start to finish, but it never stands still.

Drawing the sections out of the loop

In the lesson on arrangement, you saw the usual sections and the energy curve. Let's apply them to our loop. The next table shows one way of doing it among many, with lengths in multiples of eight bars.

Notice that no section asks for new music. The intro and the outro use some of the blocks, the verse takes one away, and the drop brings them all together. The real work starts when you want a section to stand out more: that's where variations in the chords and the bass come in.

Varying the chords without changing the track

The safest way to vary a progression is to keep the first chord, which establishes the key, and change what follows. A chord can easily be replaced by another chord from the key that shares two notes with it. In A minor, F contains F, A and C, and Dm contains D, F and A: the two share F and A, and one can take the other's place without the ear feeling lost. Listen to this variation.

The second change is stronger. The E major chord contains G♯, the leading tone, which rises a half step to A. It creates a much clearer sense of expectation than the G in the original loop, which makes it a good choice for the end of a verse or a build-up. Another variation, even simpler, keeps the same chords and changes only their rhythm: in a breakdown, let each chord last two bars instead of one, and the same progression will suddenly feel wider and calmer.

Varying the bass

The bass is the other lever, and often the most effective one, because it changes the energy without touching the harmony. Over the same chords, a held bass calms things down, and a rhythmic bass pushes forward. First, listen to the calmest version: a single note per chord, the root, held for the whole bar.

Now here's the same harmony with a drop bassline. It stays on the notes of each chord, the root, the octave and the fifth, but it's syncopated, and the last note of each bar moves one step toward the bass note of the next chord.

The G in the first bar steps down a whole step to the F in the second, and the B in the second bar rises a half step to the C of the next chord. Between these two extremes, anything goes: a bassline in steady eighth notes for the verse, a pedal note on A while the chords change in the intro, a bass that disappears before the drop. Each version tells a different section's story with the same loop.

Setting up the drop

A drop hits hard when it comes after a wait, and you build that wait with tools you already know. With harmony: you end the build-up on an unstable chord, for example iv then V, which demands the return to i. With rhythm: a snare hits faster and faster. With space: you cut the bass and the kick during the build-up, so that their return becomes an event.

You heard it: the E major chord and the snare in sixteenth notes create tension, and the return to Am with the kick releases it all at once. It's the tension and release mechanism you already know, just stretched over several bars. Many producers also add a short cut right before the drop, half a bar or a bar of near silence, while the ear holds its breath.

Finishing the track

To get out of the loop, one method works especially well: subtraction. Duplicate your complete loop, with all its tracks, across the whole length of the future song, for example 96 bars. Then remove, section by section, whatever shouldn't be there, following your plan. Taking things away is much easier than adding them, and in an hour you have a whole structure, even a rough one.

Then set yourself a simple rule: you get to the end before you polish. A complete, imperfect first version teaches you more than a perfect intro. Take a reference track you've analyzed with the method from the previous lesson, and compare your structure with its structure. Finally, give yourself a deadline. Export the track, listen to it the next day on different speakers, write down three fixes, make them, and move on to the next one.

In the next lesson, you'll find quick reference sheets for eight genres, so you know which habits to follow, or bend, depending on the style you produce.