Beats, bars and phrases

Beats

A beat is the basic pulse of a song, the thing you tap your foot to. In most dance music, each beat is marked by a kick drum. The speed of the beats is the tempo, measured in BPM.

Bars

Beats are grouped into bars, also called measures. Almost all dance, pop and hip-hop music is in 4/4 time, meaning each bar contains 4 beats. When you count "1, 2, 3, 4, 1, 2, 3, 4," each group is one bar.

The first beat of each bar, the "1," is the downbeat. It usually feels strongest. In house and techno, crashes, new sounds and vocal lines often start on a downbeat.

Phrases

Bars are grouped into phrases. In dance music, phrases are almost always multiples of 4 bars:

Producers usually change something at the start of each phrase: a new instrument enters, the drums drop out or a vocal begins. That is why the listener feels the music "moving forward" in blocks.

How to count phrases

1. Find the downbeat. Listen for the strongest kick, crash cymbal or the start of a vocal line.
2. Count beats in groups of 4: "1, 2, 3, 4." Each "1" is a new bar.
3. Count bars on your fingers or in your head: "1, 2, 3, 4" while tapping the bar number.
4. After 8 bars, listen for a change. If something new happens, you have found the phrase.

Many DJs count "1-2-3-4, 2-2-3-4, 3-2-3-4," where the first number is the bar.

Why phrasing matters for mixing

If you start a new track on the wrong beat of a phrase, both tracks will play their changes at different times. The mix will sound messy even if the beats are perfectly matched. If you start the new track at the start of a phrase, their changes line up and the mix sounds deliberate. See phrasing.

Visual aids

Most DJ software and media players show:

• Beat grids marking each beat and bar.
• Phrase markers or color-coded waveforms showing sections.
• Beat counters showing the position in a 4 or 16-beat cycle.

These help, but phrase detection is not perfect. Train your ears so you can verify what the screen shows.

Exceptions

Not every track follows the rules:

• Some tracks have intros with odd numbers of bars.
• Songs in hip-hop, pop and rock may have 2-bar pickups or extra bars.
• Some genres use 3/4 or other time signatures, though this is rare in clubs.

When a track breaks the pattern, listen through it before the gig and set a cue point at the first proper downbeat. See cueing.

Practice exercise

Put on a house or techno track, close your eyes and count bars until you hear a change. Note whether it happened at 8, 16 or 32 bars. Repeat with ten tracks. You will start to feel phrase changes coming before they happen.