John DeMena is a Spanish-born, Los Angeles–based, multi-award-winning artist known for his cinematic rock, expressive guitar work and emotive vocals. His debut album Dreams and Lies earned international acclaim and was featured on MTV, Loudwire, Metal Hammer and Guitar Club. He has toured across the U.S., Spain and Chile, collaborating with musicians linked to acts such as Queens of the Stone Age and Steve Vai, and his music videos, notably the award-winning “Eternal Eyes”, have been recognized globally. His upcoming album features collaborations with Alain Johannes and flamenco artist Sabrina Romero, blending his signature atmospheric rock with flamenco and ethnic influences. A longtime user of KNA pickups, John is committed to achieving authentic, high-quality sound on stage and in the studio.

Katherine Avgerinou- Violinsparkle

A classically trained violinist with over two decades of experience, Katherine Avgerinou studied at the State Conservatory of Thessaloniki and is currently pursuing a degree in Music Practice at the University of Southern Queensland. Known for blending classical technique with genres like pop, R&B, folk, jazz, and EDM, she brings versatility and artistry to every performance. Her career includes roles as soloist, principal violinist, and concertmaster with orchestras across Australia and beyond—most notably with the Melbourne Symphony Orchestra and in Vision Australia’s Carols by Candlelight. 

Ashley Campbell, daughter of country legend Glen Campbell began her career playing banjo and keyboard in her father's band on several world tours and has found success as a solo artist in the country/americana music scene; most notably with her debut single "Remembering" which she wrote for her father and is featured on the Grammy award winning and Oscar nominated album for the documentary Glen Campbell: I'll Be Me.

Ashley released her first album, The Lonely One, in 2018 which hit the Top Ten of the UK Country Chart upon release. Her sophomore album, Something Lovely was released in 2020 with eleven original tracks including “If I Wasn’t” featuring Vince Gill. Her latest and most current creative work has been in partnership with virtuoso guitarist Thor Jensen as the duo Campbell Jensen. They released their debut album Turtle Cottage in November of 2023 and are currently writing for their next release. Ashley has also released three videos with Scott Bradlee’s Postmodern Jukebox and began touring with them in the spring of 2024.

Sleeper Bill is a French singer, songwriter, and guitar player from Rennes. He discovered music at 5 years old, playing the piano, then heads for guitar as a teenager, influenced by guitar heroes like Stevie Ray Vaughan, Jimi Hendrix, Angus Young or Brian Setzer. Very soon, he decided to write his own songs, practicing different instruments and vocals until he was able to play his first gigs. He improved his culture and his writing by studying music at the university. Meanwhile, between lessons and concerts, he worked in a music store, as a true instruments passionate. A few times later, he had the opportunity to live with his music. Therefore, after 3 albums and a hundred of gigs in Europe, the multi-instrumentalist decided to join his passions to create his Youtube channel, speaking of music, gear and most of all, guitar.

Argentinian guitarist, teacher and composer from Buenos Aires. He graduated from the Universidad Nacional de las Artes (U.N.A.) with a degree in Musical Arts in classical guitar. His curiosity for the guitar started when he was a child and his passion for the instrument has led him to play different musical genres such as Tango, Folklore and Jazz combined with Latin American music.    He has published two solo guitar albums "De Arrabal" and "Milongueado" available on all digital platforms. With a lot of dedication on his YouTube channel he creates content for guitarists (interviews, classes, reviews).