Scale Explorer
Map scales across a guitar or bass fretboard and hear notes or full scales.
Try Scale Explorercfbuilds.dev
CF Builds
Useful things for the web, creative work, and play.
CF Builds is Chris Farrell’s home for websites, creator tools, music technology, and practical software.
Current work: ControlHub, a local-first control surface for streaming and creator workflows.
Current projects
Useful things you can explore now.
Start with CFJams: browser tools for scales, arpeggios, progressions, timing, and tuning.
Rhythm & Groove
Learn fifteen guitar and bass grooves, hold time through silent bars, and check attack placement locally.
Try Rhythm & GrooveProgression Practice
Loop pop, rock, blues, and funk changes while following guided fretboard targets.
Try Progression PracticeEar-to-Neck Trainer
Hear notes, intervals, and chord tones, then find them on guitar or bass.
Try Ear-to-Neck TrainerArpeggio Lab
Build chord tones, practice inversions, and connect harmony across guitar or bass.
Try Arpeggio LabGuitar + bass tuner
Use a local browser tuner with live pitch detection and no uploaded audio.
Open the tunerCurrent work
ControlHub
Early proof of concept
A local-first control surface for streaming and creator workflows.
ControlHub brings scene control, audio states, chat, and creator utilities into one focused workspace.
About ControlHub
The bigger picture
Built for the web, creative work, and whatever is interesting next.
Websites
Clear, focused sites made to be useful from the first visit.
Creator tools
Practical controls and utilities for creative workflows.
Music technology
Browser tools for learning, tuning, and practice.
Practical software
Small systems that make recurring work easier.
Elsewhere
Find CF Builds elsewhere.
Profiles and channels for code, video, live streams, and updates.