Start Playing
Tune up, learn G and D chords or bass roots, count four steady beats, and complete “Skip to My Lou” in a 20–30 minute first session.
CF Builds Music Tools
CFJams
Play your first guitar or bass song today.
Start with two comfortable shapes, count four beats, and play a complete song. Then choose familiar music by genre and learn why it works after it is already under your fingers.
Start with music
Play first. Explain it as you go.
No account, score, streak, or locked lesson. Begin with guitar or bass and move at your own pace.
Songbook
Filter twenty beginner-friendly songs by instrument, genre, and level. Five public-domain lessons are complete on CFJams; popular titles hand off clearly to licensed charts.
Tools available now
Start with a working tool.
Each tool has a focused purpose, clear controls, and a direct browser route.
TOOL / 01Available
Scale Explorer
Find notes for riffs and solos, hear them, and see nearby keys on the Circle of Fifths.
- Hear every highlighted note
- See beginner chord and bass shapes
- Find nearby keys when you are ready
TOOL / 02Available
Rhythm & Groove
Learn a rhythm, keep playing when the backing drops out, and check your timing.
- 15 guitar and bass play-alongs
- Quiet sections that test your count
- Optional timing check
TOOL / 03Available
Progression Practice
Practice chord changes and find notes that sound good over each chord.
- Pop, rock, blues, and funk
- Play with chords, bass, and click
- See notes to try over each chord
TOOL / 04Available
Ear-to-Neck Trainer
Hear a note, then find it on your guitar or bass.
- Replay each sound as often as needed
- See every matching fret
- No microphone or recording
TOOL / 05Available
Guitar + bass tuner
Use live pitch detection for standard guitar and bass strings.
- Chromatic pitch detection
- String guidance
- On-device analysis
TOOL / 06Available
Arpeggio Lab
Break chords into single notes and use them in bass lines, melodies, and solos.
- Six plain-language lessons
- Play chords one note at a time
- Practice moving between chords
TOOL / 07Available
Metronome
Build a steady pulse with a clear local click and visual beat counter.
- 40–200 BPM and tap tempo
- 2, 3, 4, or 6 beats per measure
- On-device audio with beat 1 emphasis
Current scope
Music utilities with practical boundaries.
CFJams focuses on small browser tools for instruments, practice, and signal understanding.
- 01
Focused
Each tool addresses a specific music or practice task.
- 02
Direct
Tools open in the browser without an account.
- 03
Local
Audio analysis and previews run on the current device.
- 04
Clear
Each page describes its capabilities and current limits.