YumYum Beast is an original rock band from Haiku, Hawaii.  The band began in 2013 as an acoustic duo in Portland, Oregon, with Matthew Del Olmo and Justin Morris. They had just gotten off the road from a long stretch of touring, and were full of inspiration. Matt and Justin simply started writing and their songs flowed effortlessly. They built their first batch of material in North Portland, Oregon, and performed often in the local scene there. The following year they relocated to the Island of Maui, Hawaii, where they continued writing and performing. Justin and Matt met drummer James Bowersox and bassist John Micheal Jelliffe on Maui. Soon after that sonic explosion the band began performing electrified as a four piece, and created the sound the world now knows as “YumYum Beast.”

YumYum Beast writes and performs original songs and sound-scapes. The band creates their sound with drums, bass, guitar, acoustic lap steel, and 5 string banjo. YumYum Beast’s main focus is to bring people together and to connect people with the band and with each other.



Photo by David Randall
Photo Above by: David Randall

Justin Morris | Dobro, Guitar, Vocals

Born in the Appalachian Mountains of southern West Virginia, Justin Morris is a multi-instrumentalist who is always pursuing new sounds and original music. Many people comment on his unique lap steel tone, which he achieves with unconventional methods. Justin comes from a musical family and had many inspirational people in his life. Music gave him the opportunity to travel and perform throughout the United States, Alaska, Puerto Rico, and … Hawaii, where he calls home now.

Justin is an original member of national touring band, BrownChicken BrownCow StringBand, and now writes songs again with BrownChicken band mate Matthew Del Olmo. Justin and Matt have been performing together for more than 10  years, and you can hear this in their music. In addition to performing, Justin enjoys producing other artists’s music and engineering live sound.

Photo Above By: David Randall

Matt Del Olmo | Guitar, Banjo, Vocals

Matthew Del Olmo grew up in Chicago, IL playing electric guitar & listening to his parents collection of vinyl records. Studied music academically from 2004-07 at Guilford College in Greensboro, NC. After three years immersed  in music & art studies he depart from academia.  Spring of 2008 Matthew dropped in on a BrownChicken BrownCow StringBand rehearsal in Lewisburg, West Virginia finding a true passion for string music. From 2008 then til present he still performs with BrownChicken BrownCow Stringband (upright bass, guitar, 5 string banjo) & The Aloha Bluegrass Band (Guitar).

As a more recent departure from Bluegrass, Matthew has found his way back to the electric guitar.  Matthew writes music using cross-genres; rock & roll grooves, funky dance vibes, electronic beats & acoustic instruments as his pallet. Matthew is currently living in Haiku, Hawaii working as a studio musician, recording artist, and stage performer.

Photo Above by: David Randall

John Michael Jelliffe | Bass

John Michael Jelliffe is a young bassist born in the suburbs of New York City. His approach to music is rooted in creating deep grooves and spanning many styles. His musical education is heavily influenced by funk, Afro-Cuban, and jazz rhythms.  Now residing on the island of Maui, Hawaii John Michael is an active member of a collective of bands in the Hawaii scene; including hillbilly funk band; Yum Yum Beast, Afro-punk funk band; Freeradicals Projekt, and world music and reggae artist; Mishka.

Photo Above by: Justin Orr

James Bowersox | Drums, Percussion

James Bowersox, originally from Connecticut has been part of Hawaii’s music scene for over a decade. He is known by his peers for his driving rhythms, dynamic sensitivity, and positive attitude. He has acquired his musical education as a studio musician and from putting himself in a variety of genres and talent.

James tours nationally and aboard with multiple artist; Freeradicals Projekt, Debra Vial Band, MOTHxp, Hillbilly Hellcats, and most recently YumYum Beast.  One of Jame’s most recent projects includes recording a full length album with Freeradicals Projekt at Bear Creek Studios in Washington State.

Upcoming Shows 2019

Sunday | April 13 | Maui Arts & Culture | Color Festival  | Set Time 1:45pm

 Friday | April 26 | Charleys in Paia | JamFest |Closing Act 12:00am


Saturday | May 18 | Maui Arts & Culture | Brew Festival | VIP Set


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