Develop steady time, root-and-fifth two feel, chord-tone walking lines and chromatic approaches. Eighteen original lessons progress from clear roots to major and minor ii–V–I cadences, a twelve-bar jazz blues, octave anchors, third-and-seventh landmarks, scale-neighbour arrivals and two-feel targets. Practise a selected triad or seventh chord, two-sided approaches, fourth-cycle links and changes between two feel and walking. Read the practice advice, listen, sing the roots, then play the line on your instrument.
Choose a starting note, all twelve keys through fourths, a key cycle by any interval from minor second to major seventh, or your own group of keys. Each complete exercise moves to the next key; the route ends before the starting key repeats. Major-third cycles contain three keys, minor-third cycles four, and fourths and fifths all twelve.
Follow the notes on a four-string bass tuned E–A–D–G, a low-register piano keyboard, or a six-string guitar in standard tuning. Guitar playback and MIDI are one octave above bass so the same line can be played on a standard guitar. Bass, guitar and piano each remember an independent Sound source choice, including in shared exercises. The circle of fifths sits beside the instrument, marks the exercise chords and follows the current chord and key, with the chord name above it. Choose low or upper register, ascending, descending or mixed inner chord tones, tempo and meter. Fretboard fingerings favour nearby strings within a compact hand position rather than stretching the entire pattern along one string; the lesson's musical notes stay unchanged. Play one pass or loop the whole route; a one-bar count-in stops before the exercise begins. BPM counts the written beat, so 6/8 and 7/8 use eighth-note pulses. Swing feel keeps quarter-note walking steady and swings existing eighths without echoing notes. A separate eighth-note line option generates moving notes. Swing intensity and laid-back placement each range from 0 to 100%, without forcing the line into a rigid triplet shuffle. Choose a built-in sound source and download one complete exercise as bass MIDI for further practice.
Pause retains the current position. Resume or Space continues from it after the selected one-bar count-in; Stop resets the exercise. Swing, laid-back feel, volume and neck scrolling update live without pausing. Other musical changes pause when the bar and event structure still matches; changes that reshape the route stop playback and prepare the new exercise.
The full-width Exercise position slider spans one complete route, even when looping. Scrub forward or backward to hear notes and follow their instrument positions, then release to continue if playing. Before starting or while paused, choose another position and use Play/Resume with your selected count-in. Moving the slider does not change the exercise or downloaded MIDI.