Some songs need a chorus before you recognise them.

Others need about two seconds.

A guitar chord, a drum pattern, a piano note or a strange electronic sound can be enough to tell your brain exactly what is about to happen. The best intros do not simply begin a song; they become part of the song’s identity.

Here are 30 tracks that millions of listeners can probably recognise before the vocal has even started.

1. Queen – Another One Bites the Dust

That bassline is almost impossible to mistake for anything else. It is simple, spacious and instantly tells you which record is coming.

2. Nirvana – Smells Like Teen Spirit

Four distorted guitar chords were enough to define an era. Even people who rarely listen to grunge often recognise it immediately.

3. The White Stripes – Seven Nation Army

One of the most famous riffs of the 21st century. It has escaped rock music entirely and become a chant in sports stadiums around the world.

4. Michael Jackson – Billie Jean

The opening drum groove is followed by one of pop music’s most recognisable basslines. You barely need the rest.

5. The Killers – Mr. Brightside

Dave Keuning’s rapidly picked guitar riff gives the song away almost instantly.

6. Fleetwood Mac – Dreams

The soft drum groove and warm atmosphere are subtle, but once you know Dreams, the opening is unmistakable.

7. Guns N’ Roses – Sweet Child o’ Mine

Slash’s opening guitar pattern is so distinctive that it has become almost inseparable from the idea of a famous guitar riff.

8. ABBA – Dancing Queen

The descending piano flourish arrives before the song has properly begun and immediately creates the feeling of a disco classic.

9. Eminem – Lose Yourself

A few tense guitar notes and you already know what is coming. The intro perfectly sets up the song’s nervous energy.

10. Oasis – Wonderwall

The acoustic guitar rhythm is so familiar that it has become a joke among guitar players, but that familiarity proves how recognisable it is.

11. AC/DC – Back in Black

Few guitar riffs sound as confident. The opening leaves huge amounts of space, making every chord hit harder.

12. Europe – The Final Countdown

Possibly one of the most recognisable synthesiser melodies ever recorded.

13. a-ha – Take on Me

The synth line is fast, bright and unmistakably 1980s. It also happens to be incredibly difficult to hear without mentally continuing the melody.

14. The Rolling Stones – (I Can’t Get No) Satisfaction

That fuzzy guitar riff announces itself immediately and remains one of rock music’s foundational hooks.

15. Deep Purple – Smoke on the Water

Generations of beginner guitarists have learned this riff for a reason. Almost everyone knows it.

16. Bee Gees – Stayin’ Alive

The rhythm arrives with instant swagger. Before the vocal begins, the disco groove already has complete control of the track.

17. Survivor – Eye of the Tiger

The stop-start guitar pattern has become shorthand for training montages, sporting ambition and getting yourself ready for something difficult.

18. Beyoncé feat. Jay-Z – Crazy in Love

The brass sample at the beginning is so explosive that the track feels like it has already reached the party before the vocals appear.

19. Britney Spears – …Baby One More Time

Those opening piano notes are among the most efficient introductions in pop history.

20. Outkast – Hey Ya!

The count-in and guitar immediately create the feeling of a live performance about to burst into life.

21. Daft Punk – One More Time

The compressed, filtered opening texture is unmistakable once you have heard the song a few times.

22. Avicii – Levels

The bright synth progression has become one of EDM’s defining melodies.

23. Dr. Dre feat. Snoop Dogg – Still D.R.E.

The repeating piano figure is so famous that it can fill a room with recognition before either rapper says a word.

24. Red Hot Chili Peppers – Under the Bridge

The clean guitar introduction is gentler than many songs on this list, but instantly recognisable to rock fans.

25. Lynyrd Skynyrd – Sweet Home Alabama

A few guitar notes immediately place you inside one of classic rock’s most familiar records.

26. The Verve – Bitter Sweet Symphony

The sweeping string motif is the entire atmosphere of the song distilled into its opening seconds.

27. Black Sabbath – Iron Man

Heavy, slow and enormous. The riff is so simple that every note feels unavoidable.

28. The Prodigy – Firestarter

The opening electronic texture sounds aggressive before the track has even fully arrived.

29. Gorillaz – Feel Good Inc.

The laugh and bassline create one of the strangest and most recognisable openings of the 2000s.

30. Journey – Don’t Stop Believin’

The piano intro has become a universal signal that a huge singalong is about to happen.

What makes a song instantly recognisable?

Usually, it comes down to identity.

The strongest intros contain something that belongs almost entirely to that song: an unusual riff, a distinctive tone, a unique rhythm or a melodic phrase that listeners can remember without hearing the chorus.

There is also an element of repetition. Songs played at weddings, clubs, sporting events, on radio and in films become embedded in memory through sheer exposure.

But exposure alone is not enough. Plenty of huge hits begin in relatively anonymous ways.

The songs above give you their identity immediately.

What song would you recognise fastest?

For some listeners it will be Billie Jean. For others it might be Seven Nation Army, Mr. Brightside or Dancing Queen.

That is what makes this question fun: recognition is partly universal and partly personal. A song that defined your childhood may trigger your memory faster than the biggest hit in the world.

And sometimes the first five seconds are all you need.