SYS_NODE: RTL-MT-01|LOC: COLUMBIA FALLS, MT
SYS_TIME:
KALI_WX: LOADING...[SIGNAL_ACTIVE]
◈ NAVIGATION MATRIX ◈
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SIGNAL & SYNTAX // ROB LACKEY // ROCKET TREE LABS
◈ MUSIC LIBRARY

THE SIGNAL LIBRARY

An interactive music education system — built for curious minds and serious players. Map scales and chords across the fretboard, tune your guitar live in the browser, and work through lessons from first principles to advanced theory.

14
SCALES & MODES
12
CHORD VOICINGS
6
GUITAR TUNINGS
17+
CURATED VIDEOS

Fretboard Mapper

Select any root, scale, or chord — see it mapped across all 6 strings. Click to hear each note.

120 BPM
A Pentatonic MinBlues and rock backbone. Instantly recognizable.Notes: A · C · D · E · G
135791215eBGDAE5♭74R5♭7R♭345♭7♭345♭7R♭34R♭345♭7R5♭7R♭345♭345♭7R♭3♭7R♭345♭7
INTERVALS:
R
♭3
4
5
♭7
● = Root  |  ■ = Scale/Chord Tone  |  Click any dot to hear the note
◈ SIGNAL ANALYSIS TOOL

Chord Progression → Scale Matcher

Enter a chord progression and find compatible scales. Check multiple scales to merge them into a combined palette.

◈ MORE COMING SOON ◈

This Library Is Growing

Upcoming additions: chord progression builder, ear training tools, rhythm trainer, Nashville Number System deep-dive, and jazz harmony modules.

Chord ProgressionsEar TrainingRhythm TrainerJazz Harmony