Ian D'Sa is best known as the lead guitarist for the Canadian rock band Billy Talent. His guitar work is characterized by a blend of aggressive riffs and melodic lines, often incorporating elements of punk rock and alternative music. D'Sa frequently uses drop tunings, which contribute to the heavy sound that defines much of the band's music. In addition to his powerful rhythm playing, D'Sa is recognized for his intricate solos and creative use of effects. He often employs techniques like palm muting and harmonics, enhancing the emotional impact of the songs. His contributions have played a significant role in shaping the distinctive sound of Billy Talent.