The term “secret weapon” is usually reserved for special ops. But Jamaica native Lee ‘Scratch’ Perry, the often-overlooked grandfather behind countless reggae and dub productions, is the true secret weapon behind the development and subsequent acceptance of the bass-heavy, bombastic genre of dubstep. Were it not for Perry’s mixing-board experiments and daring progression of reggae music, the heavy-hitting sounds of dubstep would have never come to fruition. Perry takes the stage along with the Wailers on Saturday, Dec. 10, at the Uptown Theatre. 1350 Third St., Napa. 8pm. $42. 707.259.0123.