Learning how to use MIDI is one of the first big steps in music production, because MIDI lets you record, edit, and reshape musical performances with total flexibility. Unlike audio, MIDI stores the instructions of a performance — which notes, how hard, and when — rather than the sound itself, so you can change the notes, instrument, or timing at any point.
This guide walks you through using MIDI in any modern DAW: recording it, editing it in the piano roll, fixing timing, and automating sounds.
How to use MIDI: the basic workflow
The MIDI workflow is the same in every DAW even if the buttons look different:
- Create a MIDI (or instrument) track and load a virtual instrument onto it.
- Choose your MIDI input — a controller, or your computer keyboard.
- Arm the track to record, set a tempo, and play in your part.
- Edit the recorded notes in the piano roll.
- Quantize timing, adjust velocities, and automate parameters.
If you do not own a controller yet, our explainer on what a MIDI controller is covers the hardware, but you can do everything below with a mouse and your QWERTY keyboard to start.
What MIDI actually sends
It helps to understand what is travelling down a MIDI connection, because everything you edit later is just these messages. A MIDI note message has two key parts: the pitch (which key was pressed) and the velocity (how hard it was struck, on a scale of 1 to 127). Alongside notes, MIDI carries continuous controller (CC) data — the messages your modulation wheel, sustain pedal, and assignable knobs send — plus pitch bend and program changes that switch a synth to a different patch.
Because all of this is just data, none of it is permanent. A note recorded too quietly is a velocity value you can raise; a sustain pedal you forgot to release is a single CC message you can delete. Nothing has been “printed” to audio, so there is no quality loss when you make a change — you are editing instructions, not re-rendering sound.
Recording MIDI
Load an instrument — a piano, synth, or drum kit — onto your track. Set your project tempo first, because MIDI is tied to your timeline; if you are unsure how tempo works, read what BPM in music means. Turn on the metronome, arm the track, hit record, and play. Do not worry about perfect timing on the first take; the whole point of MIDI is that you can fix it afterwards.
A couple of habits make recording smoother. Give yourself a count-in of one or two bars so you are settled into the tempo before the first note lands. If a full pass is too hard to play cleanly, loop a short section and record it as several takes, or simply play the part slower — drop the project tempo to something comfortable, record, then return the tempo to normal. Because MIDI is timeline-based, the part will speed back up perfectly in time.
Editing in the piano roll
The piano roll is the grid where your MIDI notes appear, with pitch up the side and time across the top. Here you can:
- Move notes to change pitch or timing.
- Lengthen or shorten notes by dragging their edges.
- Draw new notes in with the pencil tool.
- Adjust velocity so some notes hit harder than others for a natural feel.
Because nothing is “baked in,” you can fix a wrong note, transpose a whole chord progression, or swap the instrument entirely without re-recording.
The piano roll is also where you build parts you could never play live. Drawing notes by hand is the standard way to program drums, intricate arpeggios, or fast hi-hat rolls, and most DAWs let you snap drawn notes to the grid so they stay rhythmically tight. When you transpose, select whole groups of notes and move them together to keep chords and melodies intact rather than nudging single notes one at a time.
Fixing timing with quantize
If your performance is slightly off-beat, quantize nudges notes toward the nearest grid division. Used gently, it tightens a part; used at full strength, it can sound stiff. Our dedicated guide on how to quantize in a DAW explains how to keep things tight without killing the groove.
Layering and changing sounds
One of MIDI’s biggest advantages is that the notes are independent of the sound. You can copy a MIDI part to a second track, load a different instrument, and instantly layer two sounds — for example a sub bass under a synth bass. You can also audition completely different instruments on the same melody until one fits the track.
Automating with MIDI
Beyond notes, MIDI carries control data. You can record knob and fader movements from a controller, or draw automation in your DAW, to make a filter open over time, swell the volume, or modulate an effect. This is how producers add movement and expression. Once your parts are programmed and automated, you move into balancing them — start with our EQ and compression fundamentals and the wider mixing and mastering resources.
How to choose a virtual instrument for your MIDI
Since MIDI is silent on its own, the virtual instrument you load is what your audience actually hears, so it is worth choosing deliberately. Sampled instruments — pianos, strings, real drum kits — give the most realistic results but rely on velocity layers, so playing in expressive dynamics matters more. Synthesisers are the opposite: they generate sound from scratch, respond well to CC automation, and reward you for sweeping filters and modulation over time.
For a beginner, start with the instruments bundled in your DAW before buying anything. They are more capable than people expect, and learning to program one well teaches you more than owning a dozen you never open. When a part feels lifeless, the fix is usually in the performance data — varied velocities and a little timing humanisation — rather than a more expensive plugin.
Common beginner mistakes
- Forgetting to set tempo first — set it before recording so quantize and loops line up.
- Over-quantizing — full-strength quantize can remove the human feel.
- Ignoring velocity — flat velocities make programmed parts sound lifeless.
- Selecting the wrong MIDI input — if nothing records, check the track’s input device.
- Confusing MIDI level with mix level — turning velocities up changes how the instrument plays, not just how loud it is; use the track fader to balance volume.
Frequently asked questions
Is MIDI the same as audio?
No. MIDI is performance data — a set of instructions about notes and controls. Audio is the actual recorded sound. MIDI needs an instrument to turn those instructions into sound you can hear.
Can I use MIDI without a keyboard?
Yes. You can draw notes directly into the piano roll with your mouse, or play using your computer keyboard. A MIDI controller is faster and more expressive, but it is not required.
Can I change the instrument after recording MIDI?
Yes, and this is one of MIDI’s main strengths. Because the notes are stored separately from the sound, you can swap to any virtual instrument at any time without re-recording.
What is velocity in MIDI?
Velocity is how hard a note is played, recorded as a value from 1 to 127. Most instruments use it to control loudness and tone — higher velocities are louder and often brighter. Varying velocity across a part is one of the simplest ways to make programmed music sound more human.
Should I convert my MIDI to audio?
Eventually, yes. Keeping parts as MIDI for as long as possible preserves your freedom to edit notes and swap sounds. Once a part is finished, rendering it to audio frees up CPU and locks in the sound, which is useful when mixing or sharing a session with someone who lacks your plugins.
