High Quality Content by WIKIPEDIA articles! Tool is an American rock band from Los Angeles, California. Formed in 1990, the group`s line-up has included drummer Danny Carey, guitarist Adam Jones, and vocalist Maynard James Keenan. Since 1995, Justin Chancellor has been the band`s bassist, replacing their original bassist Paul D`Amour. Tool has won three Grammy Awards, performed worldwide tours, and produced albums topping the charts in several countries.