Jeff Moles

Jeff plays electric and upright bass in the South Bay Area — blues, rock, pop, R&B, and a bit of jazz.
From the Chicago area, Jeff is a veteran of diverse working Chicago-area bands including Hit List Rock & Soul Revue (corporate band), The Grips (classic rock), and Altered Rhythm Society (groove-jazz originals).

In 2013, Jeff moved to the Bay Area where he got involved in the jam scene playing everything from Chicago blues to southern rock to disco hits. Through these jam sessions, Jeff met musicians who found him to be a reliable, versatile sub for gigs, most recently with blues artist Max Cabello Jr. Jeff currently plays regularly with Jill Dineen & the Chiltones and the Chris Patton Group.

He has in the past held the bass role in local working bands Knee Deep (blue-eyed rock & soul), Cadillac Jack (Classic R&B, blues, rock & pop), and Lea and Co (jazz standards).

Nacho Riveros

Venezuelan-born bass player Nacho Riveros has mastered the low frequency spectrum and established himself as a top tier hired gun within his local latin music circuit which has allowed him to gig around Latin America and the US, being one of his highlights his performance at the 2016 Latin Grammy Award ceremony in Las Vegas with then nominee and 2-time winner, pop artist Manuel Medrano, whose band he has been an integral part of since its inception in 2011.

He began his conservatory studies in double-bass in 1987 and then moved on to graduate in Music Education some years later. In 1997 he commenced his studies in electric bass at The Players School of Music in Clear Water, FL under the guidance of bassist extraordinaire Jeff Berlin.

He relocated to Colombia in 2000 where he continuously worked with various artists during the following years. In 2007 he began teaching at Berklee’s Global Partner EMMAT, and since 2017 has been a speaker at Berklee Latino Conferences. It is there that he became associated with 4-time Grammy award-winning Oscar Stagnaro with whom he plays in the “Bass en vivo” project. He’s also been responsible for directing and producing more than 50 music projects with EQ Music and YOP, as well as A&R with the latter. He currently tours with the aforementioned Manuel Medrano as well as with various upcoming latin artists such as Majo Gutierrez and David Monsalve.

Nacho lives a quiet life with his family in Bogotá where he dedicates most of his free time to his infant son and his wife.

Barry Warsaw

Barry Warsaw has been playing bass for over 40 years. Before moving to California, he was a long-time member of two popular Mid-Atlantic bands, Cravin’ Dogs and The U-Liners. He’s shared stages with many artists, most notably Pete Seeger, Tom Morello, Boots Reilly, and John Kadlecik. An active studio musician, Barry has recorded with songwriters as diverse as Jay Britton, Mary Shaver, Ann Blair, David Alberding, Jeff Jacobson, Mark Miller, Freddy McConnell, and Venus Rising. In 2017, Barry released an album called “Shade and Light”, available on Soundcloud. Now in California, Barry continues to write and record in his home studio, is active in the Bay Area jam community, and loves playing with Smokehouse

Julian Marshall

Our youngest MJC artist, multi-instrumentalist Julian Marshall has been rocking since not long after he entered the world.

Seen here sporting his Cort Slammer bass with a 4-string set of MJC NPS strings, his influences include The Beatles, The Wiggles, Mama, Dada, his big brother Amadeus, naps and cheese.

Adam Ezra

It’s difficult to impart the roots-steeped, road-trippin’ essence of the Adam Ezra Group into a single word, but frontman Adam Ezra nonetheless keeps one in mind as something of a mantra: community. Community is epitomized by a belief that has long doubled as a mission statement for the group: namely, that making music together is itself a form of grassroots organizing, capable of nothing less than changing the world.

A tireless touring outfit, the Adam Ezra Group is constantly on the road, often devoting their time to local charities and always going out of their way to connect with fans. They are creating a powerful, inclusive community around AEG shows that is beginning to be compared to a social-movement as much as a traditional music fan-base.

It’s this dedication to fans that inspired the annual “Get Folked Concert Tour” in which Ezra ventures solo/acoustic to the homes of at least 40 fans in as many days and almost as many states to play house concerts and small venues throughout January and February. These up-close and personal shows have become a staple for the Adam Ezra community, and have helped spread the music around the country.

Ezra started his own non-profit organization called RallySound to better support fans and activists dedicated to making the world a better place. The proceeds from the video for the single “Let Your Hair Down” are being donated toward micro-grants for cancer patients struggling to make ends meet while in treatment. The Adam Ezra Group hosts a free festival each year called The Ramble. Last year over 3,000 people came out and together they raised enough money to help 25 veteran heroes off the streets and into safe and dignified housing.

Adam’s grassroots efforts recently caught the eye of John Oates, of Hall & Oates fame. For the past few years, Ezra and Oates have been regular writing partners, meeting up in Nashville between tours. Oates also recently had Adam join him on a solo tour throughout the east coast and Midwest. In addition, Adam has also recently shared the stage as a solo act in front of Train, Melissa Etheridge, ZZ Top, Graham Parker, Southside Johnny, America, and many more.

Carlo Tanori

Carlo began playing bass in his freshman year in high school and hasn’t stopped since.

He played bass in big bands in high school and college. For several years Carlo studied privately with the late bassist, Herb Mickman (RIP Herb). Carlo says, “I learned so much from him”. Herb was the bassist and musical director for the late singer, Sarah Vaughan.

Carlo is currently the bassist for the popular Southern California based band, Suave.

A couple years ago Carlo discovered MJC Ironworks. He says, “MJC’s have it all….. tone, flexibility, maintain their brightness gig after gig. The tin packaging… very cool.

MJC Ironworks Bass Strings are truly in a class of their own!”

Andy Leab

Cleveland native and Nashville veteran, Andy began his journey into music at an early age studying violin at the Cleveland Institute of Music. Born into a bluegrass family, he studied mandolin and fiddle as a child, cutting his teeth on the stages of many Ohio bluegrass festivals in the nineties. Although percussion and rudimental drumming became a passion in middle and high school, Andy continued to be fixated on stringed instruments, fronting a power trio on lead guitar through his teen years. Heavily influenced by the likes of Larry Graham, Skeet Curtis, Mark King, and Rocco Prestia to name a few, his real passion is funk and soul and his slap and finger techniques marry both the percussive and melodic aspects of the bass guitar.

Now in Nashville for over a decade, Andy frequents the Broadway club scene as well as studio work, corporate functions and many original collaborations with local artists and musicians. You can see him hit with the likes of Chris Weaver Band, his own outfit FUNKONAUTS, and many more.

“Punch, tone, clarity, and durability. MJC brings it all to the table, not to mention a great approach to artist relations and accommodations!”

Kerri Powers

Kerri Powers has just released what some are calling the “essential cosmic American album.” Her new effort, Starseeds has already been receiving critical acclaim and extensive airplay throughout. It isn’t surprising, as she released a self-titled EP in 2014 and with zero radio or publicity assistance she was able to land the #1 spot on the Roots Music Report’s “Top 50 Folk Albums of 2014.” Over the years she’s appeared at numerous prestigious venues and musical gatherings including The Boston Folk Festival, The Philadelphia Folk Festival and Telluride Bluegrass Festival. She has toured throughout The United States as well as overseas, making appearances in The Netherlands, Belgium, and The U.K. Her song Diamond Day was featured in the motion picture Chuck, and other tracks have made their way into the television series Rescue Me and Justified.


“From extravagance to simple elegance we went, as Kerri Powers took the stage with nothing but a guitar and a tapping tambourine strapped to the toe of her boot. Reading about her I assumed she’d be a folk strummer, but she began to lay down some of the finest country blues fingerstyle guitar we’ve had on our stage. It was shades of Rory Block, Chris Smither and, all the way back, Blind Blake and Gary Davis…on top was a fascinating, strong voice rich with barbs and prickles…well written and beautifully sung stuff.” Craig Havighurst/Music City Roots, Nashville


Andy Chartier

Heavily influenced by pop-punk bands of yesteryear, Andy Chartier has watched as pop-punk has been pushed from the limelight. From the sideline he waited for his time to intervene. Born in Hayward, CA, he knew from a young age that music was a lifelong passion waiting to be ignited. A beautiful and dangerous storm brewed within Chartier until he found a creative outlet allowing him to express the mosaic thoughts tucked deep within his mind. This transpired into Chartier picking up a bass guitar for the first time.
Being transplanted from the West Coast to the Midwest could not stop Chartier from pursuing his passion of pop-punk music. As a founding member of Flashing Lights, they have been providing a fresh wave of original pop-punk music to Southwest Missouri. Their sound has been described as the “perfect road trip album” and individuals have stated “these songs and their nostalgic qualities will take you back to a simpler time when all you wanted to do was run away from your problems.” Still young in their musical careers, Chartier (and Flashing Lights) have been setting the scene on fire with their much-anticipated debut EP release “History of Us.” Their single “Andy’s Line”, which was accompanied with an intricate music video, has garnered substantial traction showing they are here to stay.
Chartier has been using MJC Ironworks strings for years on a vast array of basses for recording and live performances. Through vintage to modern basses, Andy Chartier has had two constants: a homemade floral print strap and MJC Ironwork strings. We asked him what these strings mean to him to which he responded, “A lot of people overlook their strings as being an integral part of their tone; that is, until they find a string that opens their eyes. These are those strings.”

Rob Payne

Growing up in Owensboro, Rob Payne taught himself to play as a teenager, eventually joining Furious Child and becoming a staple of the Nashville metal scene for many years.

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