About William


“I’ve been working with Bill since 2007 and he’s consistently my top-call guitarist.  Aside from his sheer talent as a musician, he is extremely professional and easy to work with.  As a fellow musician and teacher, I would recommend William Seiji Marsh without any reservation!”

-Ben Darwish, Morning Ritual

“Bill Marsh is a phenomenally talented player and singer.  Technical ability aside, Bill’s true power comes from the fact that he is a deeply musical person.  He can see many sides of a song and can quickly intuit what the arrangement wants to become and then instantly communicate it with sublime clarity.  And while all of that is happening, he’s lightening the room with his easy going nature. Somehow he pulls off being a genuinely nice guy while being an absolute pro.”

-Matt Sheehy, Lost Lander


Over the past decade, William Seiji Marsh has contributed his guitar skills to many of the Pacific Northwest’s up-and-coming and staple artists.  From his work with Portland’s indie-rock favorites, Lost Lander, to the formative experience of touring the United States, Europe and Australia with platinum-record selling swing/rock outfit Cherry Poppin’ Daddies, to playing sold-out shows in Tokyo, Seoul and Macau with Billboard-topping songwriter and chanteuse Halie Loren, William has had numerous and diverse opportunities that have instilled in him a versatile and intuitive musical instinct. Recently, William has started performing with guitarist/singer/songwriter/whistler and mariachi maestra, Edna Vazquez.

Between performances, William maintains a private guitar studio at the Falcon Art Community in N. Portland, where he coaches guitarists young and old.  He finds great joy in walking students through the same challenges of musicianship that have brought him such a fulfilling career in music.  He is currently an adjunct instructor of guitar at Portland’s Reed College as well as Willamette University in Salem, Ore.  Prior to relocating to Portland, he was co-owner/-director of Harmony Roadhouse Music Studios in Eugene, Ore. from 2008 to 2010, where he also maintained a private studio.

William is an avid builder and tinkerer.  In his spare time, he enjoys building and modifying music electronics, including guitar effect pedals and tube amplifiers.  William enjoys spending time in the outdoors when he has the opportunity.




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Performance Experience:

  • Bassist/guitarist/vocalist, Lost Lander – 2014 to present

    Studio and live performances throughout the United States. Guest appearance on Medallion (2015) prior to joining.

  • Guitarist/vocalist, Morning Ritual – 2012 to 2015

    Studio and live performances in Portland, Ore. All guitar work on The Clear Blue Pearl, feat. Shook Twins (2013), as well as background vocals.

  • Guitarist, Halie Loren – 2011 to present

    Studio and live performances throughout the United States, Japan, South Korea and Macau. Featured heavily on albums Butterfly Blue (2015), Simply Love (2013) and Heart First (2011). Butterfly Blue debuted at #1 on the Billboard Japan charts in the jazz category, and Simply Love was the #1 album in the same category (July-Aug. 2013). Heart First accolades include #1 vocal jazz album by Japan’s Jazz Critique magazine, #1 vocal jazz album on iTunes Canada, top 5 vocal jazz album on iTunes Japan, and 5 stars from CriticalJazz.com

  • Guitarist/vocalist, Cherry Poppin’ Daddies – 2010 to 2014

    Studio and live performances throughout North America, Europe and Australia. Featured heavily on albums White Teeth, Black Thoughts (2013) and Please Return the Evening — the Cherry Poppin’ Daddies Salute the Music of the Rat Pack (to be released in 2014).

  • Guitarist/vocalist/co-manager, The Essentials – 2005 to 2011

    Nine-piece Soul/R&B band. Studio and live performances throughout Northern California, Oregon, Washington and Idaho, as well as booking and contracting performances.

  • Freelance guitarist – 2003 to present

    Solo and group performances in various settings. Fluent in many popular styles, including jazz, rock, alternative, blues, and country. Also experienced in orchestral, chamber and free-improvisational contexts.

Teaching Experience:

  • Instructor of Guitar, Reed College
    September 2014 to present, Portland, Ore.

    Individual guitar instruction to both music majors and non-majors.

  • Visiting Instructor of Guitar, Willamette University
    August to December 2012, Salem, Ore.

    Individual jazz guitar instruction to both music majors and non-majors. Focus on technique, applied music theory, improvisation, and reading notation. Studio comprised nine students who took one hour-long lesson each per week. Duties also included performances with faculty jazz ensemble.

  • Co-owner/co-director/instructor, Harmony Roadhouse Music Studios
    2008 to 2011, Eugene, Ore.

    Individual guitar instruction, organizing recitals, teacher recruitment, scheduling and management of studio-space shared by over ten teachers, studio promotion and advertisement, administrative tasks and minor maintenance. Personal studio comprised more than 16 students, ages eight through adult.

  • Guitar instructor, Lesson Factory
    2006 to 2009, Eugene, Ore.

    Individual guitar instruction, group theory and guitar classes, coaching student ensembles at summer youth music camps.

  • Private guitar instructor
    2003 to present

    Teaching students of varying levels. Focus on technique, practice methods, reading notation, transcription, improvisation, and composition. Currently maintaining a private studio at the Falcon Art Community in North Portland, Ore.

Education & Honors:

  • University of Oregon, Bachelor of Music, Jazz Studies, June 2008

    Coursework included jazz improvisation and composition, jazz and classical music history, aural skills, keyboard skills, theory, ensemble performance (small and large jazz ensembles, Oregon Marching Band, Green Garter Band, Eugene Contemporary Chamber Ensemble), and private study with Steve Owen and Mike Denny. Advanced experience with Finale notation software.

Awards and Acheivements:

  • Performance credit on 2012 Telly Award-winning commercial for Selco Community Credit Union, 2011.

  • Outstanding Undergraduate Work in Jazz Studies, University of Oregon, 2008.

  • Outstanding College Rhythm Section Performer, Reno Jazz Festival/University of Nevada Reno, 2008.

  • Student Music Award for Outstanding College Big Band Performance (as a member of 2008 Oregon Jazz Ensemble), DownBeat Magazine.

  • Reader’s Choice Award for Best Band (as a member of the Essentials), Register Guard, 2009.


  • Lost Lander, Medallion. February 2015, Glad I Did Records

  • Halie Loren, Butterfly Blue. January 2015, JVC/Victor Entertainment (Japan) and Justin Time Records (US/Canada)

  • Halie Loren, The Best Collection. September 2014, JVC/Victor Entertainment

  • Cherry Poppin’ Daddies, Please Return the Evening — the Cherry Poppin’ Daddies Salute the Music of the Rat Pack. July 2014, Space Age Bachelor Pad

  • Cherry Poppin’ Daddies, White Teeth, Black Thoughts. July 2013, Space Age Bachelor Pad

  • Halie Loren, Simply Love. June 2013, JVC/Victor Entertainment (Japan) and Justin Time Records (US/Canada)

  • Morning Ritual, The Clear Blue Pearl, feat. Shook Twins. May 2013, self-released

  • Nicole Berke, This Bright Before. February 2013, Nicole Berke Music

  • Halie Loren, Heart First. 2011, JVC/Victor Entertainment (Japan) and Justin Time Records (US/Canada)

  • The Essentials, Something to Give. 2008, Essential Records

  • The Essentials, The Essentials. 2006, Essential Records