sharing the music,

sharing the journey

Tim Grabus, founder and instructor: String Theory Guitar Studio, holding an Ovation guitar – online guitar lessons nationwide

I’m Tim — founder and instructor at String Theory Guitar Studio — and I’ve spent decades writing, performing, and recording music. I teach the way I learned: patiently, step-by-step, with repetition that builds skill and confidence.

My roots run deep in the American acoustic, hard-rock and metal worlds as a guitarist, songwriter, and recording artist — including my time with Once Upon a Tyme… (Hit City Records / Turner’s World Publishing). That chapter is documented in Encyclopaedia Metallum (The Metal Archives), the definitive historical archive for metal, progressive and hard-rock artists.

But the point isn’t the résumé — it’s what this experience gives YOU in every lesson: real-world musicianship, proven practice methods, and the ability to translate “how pros think” into clear, doable steps for folks with real lives. From writing and recording original songs, to studio sessions and live performances, I’ve learned what works, what wastes time, and how to help you make progress that you can hear.

String Theory Guitar Studio is for players who want to learn the right way — without pressure or pretense. Whether you’re brand new to guitar or coming back to it later in life, we’ll move at your pace, build real skills, and bring back the joy of making music — all while helping you discover your musical universe.

Let’s get started…