Cypress Hill released their fourth album IV October 6, 1998

Cypress Hill IV is the fourth studio album by American hip-hop group Cypress Hill. It was released on October 6, 1998, by Ruffhouse and Columbia Records. After 3 years from their previous album, Cypress Hill released the ‘IV’ album. The skeletons on the cover are posing as the three wise monkeys (see no evil, hear no evil, speak no evil). Rappers MC Eiht, Chace Infinite, and Barron Ricks were featured on the album. The album went Gold in the U.S with over 500,000 units sold.
…[source: https://en.wikipedia.org/wiki/Cypress_Hill_IV]