For the past few years, Pharrell Williams has been using the same song intro as his go-to. 4 or so beats on the same note before beginning the song. Since one can't plagiarize oneself, it seems to be a signature style which indicates another hit is coming on the radio.
Other famed producer and songwriter.. Dr. Luke, engages in similar tricks with repeated notes in the middle of a word, likened to stuttering. Something about this effect in a song seems to score hits, or at least it seems to. The stuttering effect goes back to doo wop songs of the 1950s which had a lead vocal and harmonies over repeated syllables.
Williams has many years experience scoring hits for other people with songs he wrote or co-wrote, including "Hella Good" for No Doubt, "Milkshake" for Kelis, "Why Wait" for Shakira, "Hot In Here" for Nelly, "Boys" for Brittany Spears, and "Work It Out" for Beyonce. But now, fans are onto him. In fact, sometimes he's come under controversy with his songs. "Burred Lines" was famously just too similar to Marvin Gaye's "Got To Give It Up." The song is actually in a similar style, which is not protected.
The blog "Discopop Directory" declared that once you hear it, you can't unhear it. This is true. Please visit "Discopop Directory to hear the song intros he compiled on Soundcloud. The list includes:
1) SWV - "Right Here"
2) Pharrell Williams feat. Jay-Z - "Frontin'"
3) Kelis - "Milkshake"
4) Snoop Dogg - "Drop It Like Its Hot"
5) Robin Thicke - "Blurred Lines"
6) Shakira - "Why Wait"
7) Frank Ocean - "Sweet Life" (this one is especially lazy)
8) Pharrell Williams - "Brand New"
9) Paloma Faith - "Can't Rely On You"
10) Pharrell Williams - "Happy"
11) Pharrell Williams - "Hunter"
12) Jay-Z - "I Wish"
13) Pharrell Williams - "Gust Of Wind"