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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.…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.

Russell G. Hartleb (aka Sef)

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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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Counselor, Staff Coordinator, and Program Director at Power Chord Academy

January 1, 2007 - January 1, 2007

Counselor: produced young bands (ages 11–18); performed original music; provided individual instruction on bass, guitar, and vocals. Staff Coordinator: developed class curriculum, scheduled lessons, and led music workshops, enhancing theory, harmony, and music appreciation. Program Director: ensured programs ran smoothly and on time; delivered seminars on band formation, recording, and touring; assisted troubled students and addressed parental concerns.

Musician / Performer at Various artists and ensembles

January 1, 1998 - November 5, 2025

From 1998 to present, performed with Judy Mowatt, Ellen Chase, Jah Faith, Garth Dennis, Fishbone, Mt. Sac Wind Ensemble, Mt. Sac Chamber Winds, Mt. Sac Big Band, and numerous other acts across reggae, rock, jazz, folk, hip-hop and orchestral settings.