Rhythm & Tempo

Rhythm is the part of music you feel in your body: the pulse that makes people nod their heads or dance. You can make a great track with three chords, but not without a solid rhythm. This lesson teaches the vocabulary of time so you can read the grid in your DAW and talk about grooves like a producer.

Beats and Tempo

A beat is the steady pulse of a song: the moment you clap along or tap your foot. Beats are evenly spaced, like the ticking of a clock.

Tempo is how fast the beats go. It's measured in BPM (beats per minute).

From BPM to milliseconds

one beat (ms) = 60,000 ÷ BPM 90 BPM → 667 ms per beat 120 BPM → 500 ms per beat 140 BPM → 429 ms per beat

You'll use this later to set delay and reverb times that lock to the tempo. See Reverb & Delay.

Start the metronome and count "1 2 3 4" out loud. Notice the first click of every group is higher: that's the start of a new bar. Change the tempo and feel how the same pattern can feel relaxed at 80 BPM or urgent at 160 BPM.

Bars and Time Signatures

Beats are grouped into bars (also called measures). The time signature tells you how many beats are in each bar and what kind of note counts as one beat.

Time signatureCountFeel and examples
4/41 2 3 4"Common time". Almost all pop, hip-hop, rock and EDM
3/41 2 3Waltz feel. "Happy Birthday", many folk songs
6/81 2 3 4 5 6Two big swaying beats, each split in three. Many ballads and some blues
5/41 2 3 4 5Odd meter. Dave Brubeck's "Take Five"
7/81 2 1 2 1 2 3 (grouped)Odd meter, common in progressive rock and Balkan music

Use the time signature menu in the metronome above to hear each one.

Note

When producers say "an 8-bar loop" or "a 16-bar verse", they almost always mean bars of 4/4. At 120 BPM, one bar of 4/4 lasts exactly 2 seconds, so 8 bars last 16 seconds.

Note Values

A note value tells you how long a note lasts compared to the beat. In 4/4, each value is half the length of the one above it.

NoteLength in 4/4Per barGrid nameAt 120 BPM
Whole note 𝅝4 beats11/12000 ms
Half note 𝅗𝅥2 beats21/21000 ms
Quarter note ♩1 beat41/4500 ms
Eighth note ♪½ beat81/8250 ms
Sixteenth note 𝅘𝅥𝅯¼ beat161/16125 ms
Eighth-note triplet⅓ beat121/8T167 ms
Dotted eighth¾ beat—1/8D375 ms

Triplets

A triplet squeezes three notes into the space normally taken by two. An eighth-note triplet puts three even notes inside one beat, instead of two. Triplets give a rolling, bouncy feel. Trap hi-hats often switch to triplets for a fill, and shuffle and swing grooves are built on them.

Dotted notes

A dot after a note adds half its length again. A dotted quarter note is 1 + ½ = 1½ beats. A dotted eighth is ¾ of a beat. The dotted-eighth delay is a classic effect: think of the rhythmic guitar echoes in many U2 songs.

Counting: "1 e & a"

Musicians count subdivisions out loud with a simple system. In 4/4, each beat is split into four 16th notes:

Counting 16th notes in one bar of 4/4

Count: 1 e & a 2 e & a 3 e & a 4 e & a Step: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Beat: ● ● ● ●

Say it "one-ee-and-uh, two-ee-and-uh...". The numbers are the beats, "&" is the halfway point (the 8th note), and "e" and "a" are the 16ths in between.

For triplets, count "1 trip-let, 2 trip-let" or "1 & a, 2 & a" with three even syllables per beat.

The Grid and Quantization

Your DAW divides each bar into a grid of equal steps. A 1/16 grid gives you 16 steps per bar of 4/4, exactly like the counting above. That's why drum machines and step sequencers usually have 16 steps.

Quantization

Quantization moves notes you played by hand onto the nearest grid line. It fixes sloppy timing in one click. Most DAWs let you choose:

Producer tip

100% quantized drums can sound stiff and robotic, which is perfect for techno and wrong for neo-soul. If a part sounds lifeless, try lower quantize strength, a little swing, or small velocity changes so every hit isn't identical.

Downbeats, Backbeats and Offbeats

Where each part sits (16 steps, 4/4)

1 e & a 2 e & a 3 e & a 4 e & a Downbeat x . . . . . . . . . . . . . . . Backbeat . . . . x . . . . . . . x . . . Offbeats . . x . . . x . . . x . . . x .

Syncopation and Polyrhythm

Syncopation

Syncopation means putting accents where you don't expect them: on offbeats, or just before a strong beat. It creates tension and groove. A kick that lands on the "a" of beat 2 instead of on beat 3 is syncopated.

Straight vs syncopated kick

Straight x . . . x . . . x . . . x . . . Syncopated x . . . . . . x . . x . . . . .

The second pattern is close to a classic boom-bap kick. The hits arrive "early", which pulls you forward. Funk, reggaeton, afrobeats and UK garage all lean heavily on syncopation.

Polyrhythm

A polyrhythm plays two different evenly spaced pulses at the same time. The most common is 3 against 2 (three even notes in the time of two). Another is 3 against 4. Polyrhythms are central to much West African music and show up in jazz and electronic music.

A related trick producers use all the time is a 3-step pattern over a 4/4 grid: place a hit every 3 sixteenths (steps 1, 4, 7, 10, 13, 16). It keeps shifting against the beat and creates a rolling feel. This "dotted 8th" pattern is everywhere in house basslines and melodic techno.

Typical Genre Tempos

Genres have tempo ranges. These are typical ranges, not rules. See Genre BPM & Keys for more.

GenreTypical BPM
Hip-hop (boom bap)85–95
Reggaeton90–100
Afrobeats100–115
Pop100–130
House120–128
Techno125–140
Trap130–150 (often felt in half time, so it feels like 65–75)
Dubstep140 (half-time feel)
Drum & bass170–176

Half time means the drums feel half as fast as the tempo, usually because the snare hits only on beat 3 instead of 2 and 4. Double time is the opposite.

Try it in your DAW
  1. Set the tempo to 120 BPM and the grid to 1/16 [Ableton: right-click the grid › Fixed Grid · FL Studio: the magnet/snap menu · Logic: the Snap menu].
  2. On a drum track, place a kick on every beat (steps 1, 5, 9, 13) and a snare on beats 2 and 4 (steps 5 and 13).
  3. Add hi-hats on every 8th note ("1 & 2 & 3 & 4 &").
  4. Turn on record and tap a shaker or percussion part on your keyboard by hand. Then quantize it to 1/16 at 100%, undo, and try 60%. Compare the feel.
  5. Move one kick from step 9 to step 8 (the "a" of beat 2). Listen to how the syncopation changes the groove.

At 120 BPM, one beat lasts ms.

In 4/4, the snare or clap on beats 2 and 4 is called the .

Snapping hand-played notes onto the grid is called .

1. In the time signature 3/4, what does the 3 mean?

  1. There are three beats in each bar
  2. The song has three sections
  3. Each beat is a third of a second
  4. Every third note is accented

The top number counts beats per bar. The bottom 4 means each beat is a quarter note.

2. How many 16th notes fit in one bar of 4/4?

  1. 4
  2. 8
  3. 12
  4. 16

Four beats × four 16ths per beat = 16. That's why step sequencers have 16 steps.

3. What is a triplet?

  1. Three bars of music
  2. Three even notes in the space normally taken by two
  3. A chord with three notes
  4. A note held for three beats

A triplet divides a duration into three equal parts instead of two, giving a rolling feel.

4. In "1 e & a 2 e & a", which syllable falls exactly halfway between beats 1 and 2?

  1. e
  2. a
  3. &
  4. 2

"&" is the 8th-note offbeat, halfway between beats. "e" and "a" are the 16ths on either side.

5. Which genre typically sits around 170–176 BPM?

  1. Boom-bap hip-hop
  2. House
  3. Reggaeton
  4. Drum & bass

Drum & bass usually runs around 170–176 BPM, with 174 being very common.