XXL celebrates 50 years of hip-hop with this moment:

Aug. 13, 1991: The legendary rap trio Cypress Hill dropped their eponymous debut album on this day in 1991.

For B-Real of Cypress Hill, the "Eureka!" moment occurred when he decided to pitch-up his vocal delivery. In Ice-T's documentary, From Something To Nothing: The Art Of Rap, B-Real spoke of being relegated to ghostwriter duty for the group because his voice wasn't strong enough to carry a song on his own. However, when he decided to use the different pitch of his voice—a nasally, hyperkinetic delivery—it worked. Several million records sold later, Cypress Hill remains one of hip-hop's most beloved hip-hop groups of the 1990s.

Cypress Hill's self-titled debut album was the first platinum-selling album for a Cuban-American/Latino rap group in hip-hop history. Powered by B-Real's high-pitch vocals, Sen Dog's gruff bark and DJ Muggs hypnotically funky production, the album would go on to sell 2 million copies behind such classic songs as "Hand On The Pump," "How I Could Just Kill A Man, "The Phuncky Feel One" and "Latino Lingo."

Over the years, Cypress Hill would become a seminal rap group in hip-hop history. Not only as pioneering rappers for the Latino community but due to their high-energy live shows and treasure trove of popular hits.

The group released three more platinum-selling albums as well as two more albums that would achieve gold status. Cypress Hill's debut album remains one of the finer efforts from the group and one of the most beloved albums in hip-hop history.

Watch Cypress Hill's "How I Could Just Kill a Man" Video Below

Listen to Cypress Hill's Song "Hand on the Pump" Below

Watch Cypress Hill's "The Phuncky Feel One" Video Below

Watch Cypress Hill's "Latin Lingo" Video Below

See Every Rapper With a Star on the Hollywood Walk of Fame

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