Garrett Robin Hamler (born March 9, 1971) known professionally as Sean Garrett, is an American songwriter and record producer. He is responsible for a series of chart-topping compositions, most notably Usher's 2004 single "Yeah!" which ranks second on the Billboard Hot 100 Songs of the Decade for 2000–2009, and other songs written by him which include Ciara's breakout track "Goodies", Teairra Marí's debut single "Make Her Feel Good", Mario's single "Break Up", Nicki Minaj's first single "Massive Attack", and The Pussycat Dolls' single "Buttons".

Garrett has produced eighteen number-one singles in seven years of producing music, putting him in fifth place on the Billboard list of producers with the most number-one hits. Garrett is the first producer to achieve this measure of success in under a decade since George Martin, who produced 20 number-one hits for The Beatles in 6+1⁄2 years from 1964 to 1970. He is also the only active hip hop producer that is mentioned on the Billboard list of producers with the most number-one hits.Garrett frequently produces with Swizz Beatz (on Beyoncé's singles "Ring the Alarm", "Get Me Bodied", "Upgrade U", "Check on It"), Bangladesh (on Beyoncé's singles "Diva", and "Video Phone"), and Polow da Don. Garrett has been nominated for four Grammy Awards.

Source: Wikipedia (https://en.wikipedia.org/wiki/Sean_Garrett)