Guru (also known as "Bald Head Slick") is one half of the legendary hip hop group Gangstarr. Guru, an acronym for Gifted Unlimited Rhymes Universal, originally began his hip hop career in Boston but due to lack of local support moved to New York where Gangstarr then blew up. Guru is well known for his smooth voice; socially conscious and hardcore lyrics; and an effortless, confident delivery.

Founded in 1987, Gang Starr built a sizable following in the early 90's, releasing classic albums like, Step in the Arena (1991) and Daily Operation (1992). Guru's lyrical style is based on battle rhymes delivered smoothly, modestly, and with sly wit; he typically avoids using overwhelming charisma, focusing instead on his rhyming ability. Over the years he has even taken on younger rappers, including Jeru the Damaja, as proteges. He is credited with DJ Premier for executive producing Jeru's debut, The Sun Rises in the East (1994).

In 1993, he released his first solo album, Jazzmatazz, Vol. 1. The album featured collaborations with Donald Byrd, N'Dea Davenport and Roy Ayers, while his second LP, Jazzmatazz, Vol. 2: The New Reality, featured Ramsey Lewis, Branford Marsalis and Jamiroquai. The Jazzmatazz albums are commonly considered some of the best rap of the early 90s, Guru's reputation was also bolstered through the continued success of Jazzmatazz, Vol. 3: Streetsoul (2000) and Baldhead Slick & Da Click (2001).

Moreover, recent Gang Starr albums have continued to garner Guru critical acclaim. Prominent Boston underground rapper Mr. Lif frequently cites Guru as a major stylistic influence; he appears as a guest with Lif on the Perceptionists' debut album, Black Dialogue (2005).

Besides Gang Starr, his Jazzmatazz and solo albums, Guru has collaborated with countless artists since the early 90s. Not only in hiphop, but also with artists from various genres such as pop, electronica/dance, acid jazz and even brass bands.

His "first proper solo album", in his own words, was Version 7.0: The Street Scriptures (2005), released with the help of producer and new backup MC and producer Solar (who is not to be confused with MC Solaar from France). The album reached #1 on the college hip-hop charts, but was a failure with both fans and critics. It still managed to sell relatively well for an independent release.

Guru's latest project is the fourth installment in the Jazzmatazz series, entirely produced by Solar. It was released in early June 2007 and received good reviews and comments from fans.

Gang Starr's current status and future are unknown.