According to Billboard Magazine, Blurred Lines “has sold 5.8 million downloads in its 26 weeks of release, according to Nielsen SoundScan. It continues its radio dominance with a 10th week atop R&B/Hip-Hop Airplay.” What makes this song popular with everyone from 80-year-old grandmothers to 18-year-old hipsters is how these controversial words are set musically. There are plenty of songs that explore controversial themes, but this particular song has obviously captured a large audience. There must be something about the music that makes it popular.
The instrumentation is very sparse consisting of only bass and percussion, see Example No. 1. The percussion section is just a cowbell, clap, and high hat. There is also a mark tree (chime tree) at the beginning which adds a little color.
The bass part establishes a repetitive rhythmic pattern on scale degrees one and five in the key of G major. There is a descending turnaround in measure 8 that walks down the G major scale from note D to G. This firmly establishes the song in the key of G major, see Example No. 1. The entire chord progression is simply four measures on a G major chord and four measures on a D major chord with a turnaround in measure 8.
Example No. 1
The most interesting aspect of the accompaniment is its driving rhythmic pattern which is highly syncopated and full of rhythmic interest. For instance, the cowbell starts on the upbeat of count one with an interesting sixteenth-note pattern that ends on the upbeat of count four. This rhythmic motive starts and ends on an upbeat giving the song an irresistible rhythm. The clap occurs on counts two and four creating a straight up, rock and roll back beat which never fails to give any song a bouncing, upbeat rhythmic intensity. The high hat is used sparingly on the upbeat of count four in every other measure. This creates a nice rhythmic lift in measures 2, 4, 6, and 8.
Basically, the instrumental accompany is as simple as it gets, only two chords, no guitar, no keyboard, just bass. The accompaniment provides a bare bones harmonic structure and a driving rhythmic pattern that propels the song forward allowing the vocals to stand out.
This song relies almost exclusively on its vocal setting. One of the ear marks of a good setting is how closely the rhythm follows the natural rhythm of the words when spoken. For instance, “You’re a good girl, I know you want it,” sounds identical to the way one would naturally say it. Say it a few times then sing the song as comparison. Sounds the same right?
Also, the melodic contour and harmony accentuates important words and phrases throughout. For instance, harmony is only used on “You’re a good girl,” and “I hate these blurred lines.” In the chorus, these words are harmonized in thirds on both the five and one chords respectively. In both cases, the lower voice starts a half step below the third (Bb) and the seventh (F natural) in the G major scale. Then it slides up to the B natural and F#. The initial lowered third and lower seventh create extra harmonic tension making these words really stand out in the song. Most people who hear this song for the first time will remember those particular lines. Who can forget “you’re a good girl, I know you want it.” That is the core of this song.
What’s the lesson for aspiring musicians and song writers in this song? Less is more. The sparse instrumental accompaniment provides a driving rhythmic pattern which allows the words to stand out from the accompaniment. There are no fancy guitar solos or instrumental breaks to distract the listener, and harmony is used sparingly only on the most important words. So if you want a hit song, create a catchy hook and keep it simple baby. See you on the charts!