A scratch track is the rough guide recording that everyone else plays along to, and getting it right early is the difference between a session that flows and one that falls apart. It is not meant to be pretty; it is meant to be a reliable map. A good scratch track locks in the tempo, the arrangement, and the feel so that when you overdub real guitars, vocals, and everything else, they all line up. Skip it or rush it, and you spend hours fighting timing problems that trace back to a shaky foundation. This guide covers how to record a scratch track that actually does its job.
What a scratch track is and why it matters
A scratch track is usually a simple performance of the whole song, often just an acoustic guitar or keyboard plus a guide vocal, recorded to a click. Nobody expects it to make the final mix. Its purpose is to give every subsequent overdub something musical and rhythmically solid to follow. When your drummer, bassist, and lead vocalist all reference the same scratch track, their parts naturally align, because they are all responding to the same phrasing and dynamics.
The alternative, building a song part by part with no guide, almost always drifts. Timing wanders, sections get lost, and you discover in the mix that the second chorus is two bars too long. A scratch track catches those structural problems in the first hour instead of the last. Think of it as scaffolding: temporary, functional, and essential to everything built on top.
Start with tempo and a click
Before you record a single note, nail the tempo. Play the song a few times and find the BPM that feels right, then set your DAW’s metronome to it. If the song has tempo changes or a rubato intro, map those into a tempo track now so the click follows the music rather than fighting it. Getting the grid right at this stage means every edit, quantize, and loop later snaps cleanly to the bars.
Record the scratch track to that click. Even if the final song will breathe with a looser feel, the guide performance should be steady enough that the grid stays meaningful. A few practical click tips:
- Choose a click sound you can actually hear over your instrument. A woodblock or rimshot cuts through better than a soft beep.
- Add a one or two bar count-in so performers catch the tempo before the downbeat.
- Set a comfortable click level in your headphones, loud enough to follow but not so loud it bleeds into an open mic.
Recording the scratch track cleanly
Even though it is a rough guide, a clean scratch track is easier to play to, so give it a little care. For an acoustic guitar guide, a small-diaphragm condenser aimed at the 12th fret from about 20-30 cm (8-12 inches) captures a balanced tone. For a guide vocal, a dynamic like an SM58 or a large-diaphragm condenser about 15-20 cm from the mouth, angled 30 degrees off-axis to reduce plosives, works fine. You do not need a pristine chain here; you need clarity and consistent timing.
Set your levels the same way you would for a keeper: peaks around -12 to -6 dBFS with the loudest strums or sung phrases touching roughly -8 dBFS, leaving headroom so nothing clips. A clipped scratch track is annoying to play along to and can distract musicians during overdubs. Keep your audio buffer low, around 128 or 256 samples, so you can monitor with minimal latency while performing; raise it to 512 only if you hear dropouts. Record in 24-bit for a clean, usable guide.
Playing to the scratch track for overdubs
Once the scratch track is down, it becomes the reference for everyone. Solo it in the headphone mix along with the click when tracking drums, then blend in the click less as the drums themselves start providing the pulse. When tracking a lead vocal, the scratch vocal can actually get in the way, so many engineers mute the guide vocal and keep only the instrumental scratch plus click, letting the singer phrase freely against the guide chords.
A few habits keep the process tight:
- Do not edit the scratch track’s timing to match a late overdub. The scratch is the reference; move the overdub instead.
- Keep the scratch track until the very end. Even after real parts replace it, it is a useful sanity check for arrangement and lyrics.
- Label it clearly so nobody accidentally leaves it unmuted in the final mix. A scratch guitar bleeding into the master is a classic embarrassing mistake.
When to keep it and when to replace it
Occasionally a scratch performance has a magic to it that the polished re-take never recaptures, a certain looseness or emotion. If that happens, do not be precious about your plan; a great scratch vocal or guitar can absolutely earn a place in the final mix, which is another reason to record it with reasonable quality rather than treating it as disposable. But in most cases the scratch track retires once the real parts are done, having served as the backbone the whole song was built on.
The core discipline is simple: set a solid tempo, record to a click, keep levels clean with proper headroom, and treat the scratch track as the fixed reference that everything else follows. For more on building a session from the ground up, see our tracking workflow guide and the recording to a click tutorial. If you need to check or nudge a tempo, the free Violet Recording tools hub has a BPM tap tool and metronome you can use straight in the browser.
