oh. Olivia Hadjiioannou

Oh. has a passion for creating both ethereal ballads and progressive rock, metal and acoustic renderings that whisper of Satriani while Vai-esque hard and fast shreds burn through her Ibanez guitar. Symphonic and resounding harmonic choruses summon you like a Siren’s call while her piercing and sultry vocals in the timbre of Sharon Den Adel, Anneke Van Giesbergen and Tori Amos seduce you. Her music challenges you to escape into her sonic landscapes and atmospheres that take you by surprise and lead you to places musically have never been before.


The real story about Oh. and her music is not disguised behind her moniker or cultivated in the place she was born. The whys and wherefores of her music, her drive to play a half-dozen instruments or even her insistence on mixing and mastering her own songs isn’t decoded in a random train of events. It’s more an “inside-story”.

Yes, she calls herself Oh. because those are the initials of her real name Olivia Hadjiioannou *, – unpronounceable to most except to other natives of Greece where she was born.

And though, some hints as to why she became a musician can be found scattered in snapshots of instruments on her childhood walls or heard in the music played late into the nights of her home culture, in celebration or gatherings… she says:

“I never felt as if there was ever this question of whether I can play music or not, being a musician or composer was always only a question of whether you have something to write or say.”

But then again, the secret to Oh. is concealed somewhere in the recesses of an intrinsic introversion and introspection.

Her time in her studio is spent in crafting a sound ‘epic enough’ to express these illuminations perceived in her inner world.

In her compositions, you will hear instrumental acoustic rock renderings that whisper of Satriani and Vai-esque melodic hard and fast shreds that burn through her Ibanez guitar. And as you go deeper into her music, symphonic and resounding harmonic choruses summon you like a Siren’s call and piercing and sultry vocals in the timbre of Sharon Den Adel, Anneke Van Giesbergen and Tori Amos will attempt to seduce you. As she says,

“I compose with whatever instrument, sound or vocal (and the voice is an instrument and not a lead) —the particular song calls for”.

With possible obsessive compulsive or perfectionist-auteur tendencies aside, she insists on mixing and mastering her music because as she says,

“Mixing is as much a part of the composition as are the instruments and vocals. And knowing mastering is important… so you can get the sound you want and not just an industry “loudness” standard.”

There is so much more to Oh., you just need to listen and her music does ask you listen carefully because there are many twists and turns in her progressive rock and metal landscapes.
– J.C.

*click to hear how to pronounce her name


Oh. has released a debut progressive rock EP “Sleeping World” in 2013 with the award winning video “Trials – A Song for a Lost Generation” and metal album and vinyl release, “Synemotion” in 2015 and two singles, “Love Will Heal” and “Love of Avalanches” in 2016 with an innovative 360 virtual reality music video.

Two more singles, “I’m in Love” and “Deserted Eyes” are coming up for release this summer and a prog metal EP, “Metallia” is coming in fall 2017. Right now, she’s in the studio working on the progressive rock album, “Prog Unshaven” coming out in Spring 2018.


• OH.’s debut EP Sleeping World released in February 2013 – with the title track “Trials – a song for a lost generation won an international video contest.

• The album entered into Prog Archives into the Crossover Prog category.

• The song “Trials” was considered one of the top 50 influential events that marked Greece in 2013.


Reviewers have compared the timbre of her voice to Sharon Den Adel and Anneke Van Giesbergen, others to Happy Rhodes and a cross between Kate bush and Tori Amos. They emphasized her quite unique style, as one said, “she defies analysis somewhat as Queensryche” with distinctive sound of her own.


OH. composes, performs and produces her music, plays the guitar (electric and acoustic), bass, drums, violin, piano and percussion. She is also an accomplished sound engineer and mixes and masters her work. She lives between New York, NY and Athens, Greece.

Music News - Progressive Pop, Progressive Rock and Progressive Metal - by Oh. (Olivia Hadjiioannou)
Live gigs - Oh. - Olivia Hadjiioannou


Wonderful melodies and the constant flow through complex spaces stimulate impassionate moods and emotions; sometimes hammock, sometimes bed of nails, but always full of hope.” ~ Peter “Brutus” Habermann – DEAF FOREVER

It is well worth spending about 40 minutes of your time to take this journey, with the talent of this 25 year old Greek-American. With lots of music, with few but essential words, and with originality. Something tells me that we will soon be hearing again about her even larger (music) plans … ~ Elias “DEMON” Papazoglou – Hard Music

“Something rare and unique about this artist. A young female multi instrumentalist composer and vocalist in the realm of progressive rock. Makes me a bit misty in this day of EDM muzak. Lovely textures throughout, from acoustic guitars, haunting melodies behind the powerful narration. Solid Prog cred on the arrangement, with stellar production value head to toe on sound and image. OH is force to be embraced with gratitude by any ProgArt rock fan, of which I am one.”
Mark Alan Dooley ~ Fluence

Definitely a piece of progressive art by a very talented young woman. ~ Angelo Hulshout – Background Magazine

OH. – A Bombshell. Take the time to listen and see this album is a bombshell to the world of guitar! ~

OH. Yes! Providing proof positive for all time that Greek women rock, here is OH. with a tune from her 2015 album Synemotion. It’s clear that OH. is a significant talent, sure to impress again. ~ Jon Davis – Exposé

Anyone that is into guitar virtuoso types of music will love this release. Some of the tracks I found exhilarating and others interesting but in the end an appreciation for the overall talent this artist brings to the table. You can count on some amazing six string runs throughout this listen.

She has my utmost respect for such a huge accomplishment. ~ Keith “MuzikMan” Hannaleck – MuzikMan Productions

The gorgeously packaged double vinyl record is a worthy addition to any collection. The heavy music is powerful and explosive, and OH truly leads you on an emotional journey.

The song synchronizes the emotional journey into something tangible and accessible, and you get to hear a bit more of OH’s gorgeous voice which she highlighted in her 2013 debut, Sleeping World. When you know someone can sing, but yet they eschew that for the larger vision, which is to wring emotion out of the listener on the strength of the music alone, that takes courage and confidence.

I told you OH was precocious and creative. She’s also strikingly beautiful, as one can experience in her sensual and artistic music videos that accompany this release (check out the track Run Away on Youtube. OH is definitely an artist to keep an eye on. With her talent, vision, and drive, she is definitely going to make a name for herself in the music world. ~ Dave – Virtuosity

OH. – Press Photos – Synemotion


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