The Neptunes Research Paper

All his music could be split into 4 categories: The Neptunes; N*E*R*D; Solo albums; albums he produced as not a part of The Neptunes.

First track Pharrell produced was Wreckx-N-Effect 's 1992 hit "Rump Shaker". By 1994 Hugo and Williams formed The Neptunes - their production duo, which will lead to their first successes. “The Neptunes sound” was first heard on Noreaga’s 1998 track “Superhug”, which reached #36 on the Billboard Hot 100 and was Williams’ and Hugo’s first big hit.

The Neptunes sound

Drums
The Neptunes production style was usually characterized by short, punchy kick drum and snare (often sampled by Pharrell himself), and drum machine style drums. Clipse’s 2002 track “Grindin’” is one of the examples, also paying tribute to

For LL Cool J 's and Jamie Foxx 's song "Best Dress" they used Roland TR-808, however, their more recent production introduced 'live ' drum sounds comparable to what they would often use in N*E*R*D. On Busta Rhymes ' "Light Yo Ass On Fire" (2002) a big chorus effect on the rhythm track has been used for an industrial / sci-fi feel. Both The Neptunes and Pharrell as a solo producer are known for their use of percussion adding more groove to the drums. Examples are Robin Thicke 's "Blurred Lines" (2013) and Get Like Me (2013)

A quick four-count-in loop of the first beat occurs in his songs from last year’s hit “Happy” to 2013 “Blurred Lines”, and all the way back to “Right Here (Human Nature Remix)” from 1993. Many artists leave a subtle “maker’s mark” in their music, and this is Pharrell’s way of doing it.

Some of the examples:
01. SWV – “Right Here (Human Nature Remix)”
02. Pharrell – “Frontin '”
03. Kelis – “Milkshake”
04. Snoop Dogg – “Drop It Like It’s Hot”
05. Robin Thicke – “Blurred Lines”
06. Shakira – “Why Wait”
07. Frank Ocean – “Sweet Life”
08. Pharrell – “Brand New”
09. Paloma Faith – “Can’t Rely On You”
10. Pharrell – “Happy”
11. Pharrell – “Hunter”
12. Jay-Z – “I Know”
13. Pharrell – “Gust of Wind”

N*E*R*D

Was formed as a side project of The Neptunes in 1999. Released 4 studio albums (2002, 2004, 2008 and 2010) and consists of Chad Hugo, Pharrell, and Shay Haley whom they met in high school.
The band’s sound influenced by rock, funk and hip-hop while also incorporating elements of R&B and pop music. Their use of heavy synth lines and funk beats has also been praised. (wiki)

Here’s some artists that The Neptunes produced over the years:

Jay-Z
Snoop Dogg
Britney Spears
Kelis
Busta Rhymes
Nelly
P. Diddy
Justin Timberlake
Usher
Gwen