About

Chris Farrell builds CF Builds.

CF Builds is Chris Farrell’s home for websites, creator tools, music technology, and practical software.

The work

Useful software, built from real needs.

CF Builds is where Chris makes and shares websites, creator tools, music technology, and other practical software. Current public work includes the beginner-first CFJams Learning Map and Songbook, Scale Explorer, Progression Practice, Ear-to-Neck Trainer, Rhythm & Groove, Arpeggio Lab, the browser tuner and metronome, and the early ControlHub proof of concept.

The approach is practical and curious: start with a real problem, make the result clear to use, and keep experimenting.

Current projects

Explore the work.

Music education

CFJams Learning Map

Beginner-first lessons that lead guitar or bass players to a complete song before introducing theory.

Start Playing

Song learning

CFJams Songbook

Curated beginner songs, complete public-domain lessons, and clear handoffs to licensed charts for popular music.

Browse the Songbook

Browser music

Scale Explorer

Fretboard, harmony, and Circle of Fifths study with local audio previews.

Try Scale Explorer

Practice utility

Rhythm & Groove

Fifteen guitar and bass rhythm lessons with silent-gap practice, local timing feedback, and Groove Cards.

Try Rhythm & Groove

Harmony practice

Progression Practice

Guided chord loops and fretboard targets for guitar and bass.

Try Progression Practice

Ear training

Ear-to-Neck Trainer

Local note, interval, and chord-tone recognition across guitar and bass.

Try Ear-to-Neck Trainer

Chord training

Arpeggio Lab

A complete-beginner guide with playable formulas and diagrams, followed by chord construction, inversions, and voice-leading practice.

Try Arpeggio Lab

Current work

ControlHub

A local-first control surface for streaming and creator workflows.

About ControlHub

Professional work

Engineering experience and case studies.

Chris also maintains a professional portfolio covering enterprise platform work, data systems, full-stack applications, automation, and technical leadership.

View Chris's professional portfolio

Contact

Get in touch.

Questions about CF Builds or its current tools can go directly to Chris.

hello@cfbuilds.dev