Serum 2 Clip Sequencer: The Complete Guide

A good synth patch gets much more interesting when you give it a good pattern to play.

Serum 2’s Clip sequencer lets you write that pattern inside the synth, then go beyond the notes: add filter movement, draw pitch glides, introduce chance, layer variations, and audition the same idea through different presets.

In this guide, we’ll build a rolling bass sequence and use it to explore the controls that make the Clip module so useful. You’ll find screenshots from the original tutorial and short audio examples throughout, so you can see the settings and hear what changes.

Note: This article is adapted from John’s EDMProd video tutorial, embedded above.

If you want to master Serum 2 inside out, including the clip sequencer, then check out our course, Master Serum 2.

In this guide

• Build your first sequence
• Change the loop length
• Add expression, velocity and chance
• Create and switch between variations
• Control how clips launch
• Change speed and layer clips
• Draw pitch glides
• Trigger clips from a MIDI keyboard
• Record and quantize MIDI
• Keep your pattern while browsing presets
• Troubleshooting and a practice exercise

1. Build your first sequence

Open the Clip module at the bottom of Serum 2. You’ll see a piano-roll editor: pitch runs vertically, time runs horizontally, and the clip slots sit underneath.

Start with a simple sound so you can hear the rhythm clearly. In the video, John uses a bass patch and builds a rolling pattern around a repeated low note, with a few higher notes adding movement.

1. Draw a short pattern into the piano roll.
2. Use the play button beneath its clip slot to hear it.
3. Double-click a note to delete it. If you remove the wrong one, use Undo.
4. Keep the first version simple. We’ll create variations once the groove works.

Why doesn’t playback start at the first note?

In the transport-linked setup shown in the tutorial, the sequence follows the position of your DAW’s transport. Starting playback partway through a bar can therefore put you partway through the clip.

Return the DAW playhead to the beginning of the relevant phrase before testing. For a longer clip, line it up with the start of the corresponding multi-bar phrase. Later, we’ll use Retrig to control what happens when launching a different clip.

2. Change the loop length

The Length setting gives you more room to write. Change a one-bar clip to two bars, then drag the navigation area above the notes to bring the rest of the sequence into view. Select the existing notes and duplicate them—John uses Command+D on Mac—to create a starting point for the second bar.

But your loop doesn’t have to fill a neat one-, two- or four-bar phrase.

Drag the loop-end flag to shorten the repeating region. In the video, John makes the bass loop three beats long, then adds a four-on-the-floor kick underneath. The bass repeats on a different cycle, so its accents keep moving against the kick.

Listen · 6.3 seconds

A three-beat bass loop against the kick

You can push this further with an even shorter loop, or move the start flag as well as the end flag to focus on a small section of the pattern. This is a quick way to find a new groove inside notes you’ve already written.

3. Add expression, velocity and chance

The lanes beneath the piano roll let you vary more than pitch and timing. These controls can turn a rigid sequence into something with movement and accents.

Use Expression X to move the filter

Select Expression X in the lane beneath the notes, then drag its values up and down. These values need a destination before they can change the sound.

In the tutorial, John assigns Expression X to the filter:

1. Draw different Expression X values for the notes.
2. Right-click the filter parameter you want to control.
3. Choose Mod Source → MPE → Expression X.
4. Adjust the modulation amount while listening to the sequence.

Listen · 6 seconds

Expression X controlling the filter

This gives your pattern a second layer of rhythm: the notes repeat, but their tone changes. If the terminology is new, our guide to audio filters explains what a filter is doing to the sound.

Velocity only matters if the patch responds to it

Lowering the velocity of alternate notes can create useful accents—but only when velocity controls something in the patch.

John demonstrates this by changing the velocity lane and playing the sequence. At first, it sounds unchanged. He then routes velocity to the oscillator’s output level, and the quieter notes become audible.

Listen · 3.3 seconds

Before: velocity values without level modulation

Listen · 4 seconds

After: velocity mapped to oscillator level

The lesson is useful well beyond this sequencer: editing a modulation source and assigning its destination are separate steps.

Use Note Chance for variation

The Chance lane controls whether a note plays. Reduce selected values to make those notes less certain on each pass.

Listen · 10 seconds

A pattern with note chance

A useful starting approach is to keep the notes that anchor the groove reliable, then reduce the chance of a few passing notes. You retain the identity of the pattern while introducing small changes. This is a suggestion to try, rather than a requirement of the sequencer.

4. Create and switch between variations

Once the first pattern works, copy it to another clip slot. In the Mac demonstration, John holds Option and drags the clip to the next slot, then edits the copy.

Change a few notes at the end, alter the expression lane, or try a different transposition. Use the play buttons beneath the slots to switch between versions.

You can also load pre-made sequences from the Factory section of the Bank menu. This is useful when you want to explore the playback controls before writing your own material.

Watch Edit All as you work. When it’s enabled, changes to the shared clip settings apply across the clips. That’s convenient for setting a common launch behavior, but turn it off before making a change that belongs to just one variation.

5. Control how clips launch

The playback controls are easier to use once you separate timing, position and duration.

Launch Quantization: when does the switch happen?

Launch Quantization makes a clip launch wait for a musical boundary. With a sixteenth-note setting, the change lands on the next sixteenth-note boundary. With Bar, it waits for the next bar boundary.

Use shorter values for quick rhythmic changes. Use Bar when you want to switch patterns cleanly at bar boundaries. The setting applies to the selected clip unless you deliberately enable Edit All.

Retrig: where does the new clip begin?

Without Retrig, the newly launched clip can pick up at the current playback position. In the tutorial’s chord example, the incoming clip starts on its second chord.

Enable Retrig when you want a newly triggered clip to start from its beginning.

Note Gate: how long does it keep playing?

Note Gate matters when you trigger clips from MIDI notes. With it off, the clip can continue after you release the trigger key. With it on, the clip plays while you hold that key.

Launch Quantization still affects when the clip starts. If a short key press doesn’t behave as expected, check that setting too.

6. Change speed and layer clips

Change the playback rate

The Rate control speeds up or slows down a clip. Half speed stretches the pattern out; double speed makes it more urgent. The video also demonstrates much faster rates, where the sequence starts to become a texture rather than an easily recognizable bassline.

Keep BPM enabled to follow the project tempo. Turn it off for a time-based rate that runs independently of the DAW tempo. Triplet and dotted-note options give you additional rhythmic choices.

Switch from Mono to Poly for layers

The Clip section’s Mono trigger mode allows one clip to play at a time. Poly lets you run multiple clips together. This is clip-launch behavior, not the same thing as deciding whether a synth patch plays monophonically.

In the example, John plays two clips simultaneously and transposes the second up 24 semitones, or two octaves. He switches off Edit All first so the original clip stays at its existing pitch.

Listen · 7 seconds

Two clips playing in different octaves

Start with one additional layer. It’s easier to hear whether it adds something useful before adding more patterns.

7. Draw pitch glides inside the pattern

Enable the pitch-editing control on the right side of the editor to reveal pitch lines over the notes. You can then shape how their pitch moves.

John draws a rising glide between notes and a downward fall at the end of the phrase. Holding Option while dragging a line curves the transition in the Mac demonstration.

Listen · 4 seconds

The sequence with pitch glides

With the saw-based patch used in the tutorial, those movements give the sequence an acid-like character. Try a small number of glides first; they have more impact when there are stable notes around them.

8. Trigger clips from your MIDI keyboard

You don’t have to click the clip-slot play buttons with the mouse. Serum 2 can assign an octave of MIDI notes to clip triggering.

Right-click Clip and look for MIDI Input Trigger Octave. Choose an octave you can comfortably reach on your keyboard. In the video, John changes it from −2 to −1 because his keyboard doesn’t reach the lower octave.

Use the keyboard display beneath the clips as your reference for the trigger range. Then decide whether you want clips to latch or play only while held using Note Gate.

9. Record and quantize MIDI

If you prefer playing to drawing notes, use Record to capture a performance directly into the Clip editor.

The recorded notes in the tutorial land slightly off the grid. To tighten them, select the notes, right-click and choose Quantize. John uses Command+Q on Mac.

Choose the grid before quantizing

Quantization follows the grid setting. If the result puts notes on the wrong rhythmic divisions, undo, choose the intended grid, and quantize again.

John does exactly this after overdubbing: he changes the grid to eighth notes, then repeats the quantize command.

Overdub versus Extend

• Overdub adds your new performance over the notes already in the clip.
• Extend lengthens the recording instead of repeatedly recording over the same clip length.

Keep the DAW transport in mind here too. In the demonstration, an Extend recording still loops because the DAW itself has a loop enabled. If your recording keeps returning to the same point, check the DAW loop as well as Serum’s recording mode.

The recording metronome can be switched on or off with the nearby metronome button.

10. Keep your pattern while browsing presets

One of the most useful workflows in the tutorial is also one of the simplest: write a sequence you like, then audition it through different sounds.

Right-click the Clip module and choose Lock Module before changing presets. The sequence stays in place while you browse, letting you judge each sound against the same musical idea.

Listen · 17 seconds

The locked sequence through different presets

You can also use a clip as a preset-browser preview. Right-click a clip and choose Set as Preview Clip. In the demonstration, John assigns a sequence to his “Big Wobber Bass” preset, then plays that preview from the browser.

Locking a module and setting a preview clip serve different purposes: the first preserves your working sequence while browsing; the second supplies the phrase used to preview a preset.

Troubleshooting the Clip sequencer

What you notice	What to check
The sequence starts halfway through	Check the DAW transport position. For a newly launched clip, check Retrig too.
Clip changes happen at an awkward moment	Set Launch Quantization to the boundary you want.
A setting changed in several clips	Check whether Edit All was enabled.
Velocity edits don’t change the sound	Route velocity to a parameter such as oscillator level.
Several clips play at once	The Clip trigger mode may be set to Poly.
The clip stops when you release a MIDI key	Check Note Gate.
Quantized notes land on the wrong divisions	Undo, select the intended grid, then quantize again.
An Extend recording loops unexpectedly	Check whether looping is enabled in the DAW.

Put it into practice

Make one short bass pattern, then create three variations: a different ending, a few pitch glides, and some note chance. Set their launch behavior deliberately, and use Lock Module to try the sequence with several presets.

That small exercise takes you through the main idea behind the Clip sequencer: develop the pattern and the sound together. You don’t need to use every control at once. Keep the changes that improve the groove, then build from there.

Want to go deeper into the synth? Explore Master Serum 2, or revisit our complete Serum 2 beginner’s guide for the wider interface.

Screenshots and audio excerpts are from EDMProd’s original tutorial. The shortcut examples shown here are from the Mac demonstration.