Sound & signal
Hi-hat
The hi-hat is the high, ticking percussion that fills the space between kick and snare. Open hats on the off-beat are the sound that makes house music move.
In practice
Hats are the safest thing to leave overlapping — the top end is the one range where two records rarely fight.
That makes them the natural place to start and end a blend. Bring the incoming track in with its lows rolled off and only the hats audible, and you have introduced the new record without touching the space the outgoing one occupies. It also means a track that is nothing but hats and percussion — the classic DJ tool — will sit under almost anything, which is why those records stay in bags for years.
Off-beat
Where open hats sit
16ths
Typical closed-hat rate
~8 kHz+
Where they live
Where these come from: Arrangement and frequency conventions, not catalog figures. For what we can measure, see the groove reading, which these largely drive.
Why it matters
Hats live in the one frequency range where two records almost never fight, which makes them the safest thing to leave overlapping during a long blend. The low end has to be swapped and the mids get crowded fast; the top can usually just be layered.
They also carry most of what you hear as swing. The kick states the pulse, but whether a record shuffles or marches is decided almost entirely up here — which is why a hat pattern is the first thing to listen to when judging whether two grooves will sit together.
Frequently asked
What is the difference between an open and closed hi-hat?+
A closed hat is a short tick; an open hat rings until the next hit. In house the open hat lands on the off-beat and is the sound most associated with the genre.
Why do DJs leave the hi-hats overlapping?+
Because the top end is the range where two records interfere least. Lows have to be swapped and mids get crowded, but hats from both tracks can usually coexist for a whole blend.
What is a DJ tool?+
A track built mostly from drums and percussion with little melodic content. It layers under almost anything, which makes it useful for bridging between records that would otherwise clash.
Related terms
Kick
The kick is the low drum that states the beat — in most dance music, on every one of the four beats in a bar. It carries the pulse and most of the energy a floor actually feels.
Snare
The snare is the sharp drum that answers the kick, usually on beats two and four. In dance music it is often a clap or a layered mix of both, and it is what tells you where you are in the bar.
Swing
Swing delays every second sixteenth note so the rhythm lopes instead of marching. It is the difference between a house record that rolls and one that sits rigidly on the grid.
Three-band EQ
A three-band EQ splits each channel into low, mid and high and gives you a knob for each. It is the primary tool for deciding which parts of two records are audible at any moment.
Explore: Tech house mixing guide · Swing · Three-band EQ · All DJ terms