Russell G. Hartleb (aka Sef)

Hi, I’m Russell G. Hartleb, also known as Sef. I’m a versatile musician and educator based in Portland , Oregon with over two decades of performance and teaching experience. I play electric bass, vocals, guitar, and double bass, and I have collaborated with a wide range of artists and ensembles across reggae, rock, jazz, folk, and beyond. I thrive on creating music, mentoring students, and helping bands develop their sound and confidence.

In addition to performing, I teach through Power Chord Academy and private lessons, translating theory into practical skills for real-world stages and recordings. I’m excited to contribute as a musician, collaborator, and mentor, whether on stage, in the studio, or guiding the next generation of players.