JamEngine vs Scale Syllabus

JamEngine is a real-time music generation app that puts a full backing band in your pocket. Choose from 15 musical styles, pick your key and tempo, and JamEngine instantly creates authentic, genre-appropriate arrangements, complete with MIDI drums, bass, guitar, piano, brass, and woodwind instruments. Whether you're a guitarist looking for a rhythm section to practice over, a songwriter sketching out chord progressions, a jazz player working on improvisation, or a producer hunting for inspiration, JamEngine gives you a responsive, endlessly variable musical companion. 15 STYLES TO CHOOSE FROM Rock · Hard Rock · Classic Rock · Metal · Pop · Ballad · Blues · Slow Blues · Jazz Swing · Jazz Ballad · Funk · Bossa Nova · Reggae · Country · Lo-fi Each style comes with genre-authentic drum patterns, bass lines, guitar voicings, keyboard parts, and horn arrangements. 12 INSTRUMENTS Build your arrangement from a roster of 12 instruments, each with realistic General MIDI sounds: • Drums · Bass · Electric Guitar · Acoustic Guitar • Piano · Organ · Strings • Trumpet · Trombone · Alto Sax · Tenor Sax · Clarinet Mix and match any combination. Each instrument has independent volume, mute, solo, pan, density and 11 variation levels to control the complexity and character of its part. SMART CHORD PROGRESSIONS Build chord progressions using the grid editor or the interactive Circle of Fifths, a visual tool that highlights diatonic chords in your selected key, so you can see at a glance which chords belong together. Start from scratch, or load one of the built-in templates: I-IV-V, I-V-vi-IV, ii-V-I, 12-Bar Blues, Jazz Turnaround, and more. Choose from 18 chord types including major, minor, seventh, diminished, augmented, sus, and extended chords. FLEXIBLE TIME & KEY Play in any of 7 time signatures, 2/4, 3/4, 4/4, 5/4, 6/8, 7/8, and 12/8, with BPM from 40 to 300. Tap tempo to match a song. Select any of the 12 keys in major or minor. Change key mid-session and your chord progression transposes automatically to preserve harmonic relationships. VARIATION RANDOMIZER Enable the variation randomizer and JamEngine will shuffle instrument variations at musically appropriate boundaries, every 4 or 8 bars, keeping your practice sessions fresh and unpredictable without you lifting a finger. EXPORT YOUR SESSIONS Capture your jam as a WAV, M4A, or multitrack MIDI file. Use export to bring your arrangements into your DAW for further production. SONGBOOK Save your favorite sessions, style, key, tempo, chord progression, and instrument setup to your personal Songbook. Load them instantly to pick up where you left off. CUSTOM SOUNDFONTS Import your own SF2 SoundFont files to customize the sound of every instrument. FREE TO START, PRO TO UNLOCK EVERYTHING JamEngine is free with 4 styles (Rock, Metal, Jazz Swing, Lo-fi), 3 song saves, and all playback features. Upgrade to JamEngine Pro for a one-time purchase to unlock all 15 styles, unlimited song saves, and full export capabilities.

Scale Syllabus puts the 253 scales of Complete Scale Syllabus by Gianluca Barbaro in your pocket, and lets you see, hear and transpose every one of them. The scales are not a stored list. The app rebuilds them with the algorithm the book itself was made with: every seventh chord, every combination of available tensions, folded together by rotation. That is why the numbering matches the printed page exactly — scale 145 here is scale 145 in the book. WHAT YOU CAN DO • See any scale in standard notation, on a piano keyboard, or on a guitar or bass fretboard • Transpose to any of the twelve keys, with each note spelled the way a musician would write it • Start from any degree: pick a mode and the scale is shown from that note, in the key you chose • Hear a scale or any of its chords, ascending or arpeggiated, with the notes lighting up as they sound • See the triads and four-note chords every degree carries, inversions included, and view any of them the same three ways • Read the fretboard as a whole map, or touch a fret for the run one hand can play from there • Ask for a chord and the neck answers with shapes a hand can really hold — tap again for the next one • Walk through the sixteen ways a four-note chord can be laid out inside two octaves of keyboard • Choose your instrument once, and clef, written octave and transposition follow • Find a scale from the notes themselves: play a phrase into the microphone, or type the note names, and the app lists the scales that contain them and says what chord they make • Follow the relationships: which scales contain this one, which ones it contains, and which are a note away • Print a scale as a sheet of engraved music, export it as PDF, or share it • Read six short chapters of music theory, with figures the app draws itself • Mark favourites and keep your own written notes on any scale A guided tour goes through all of it the first time you open the app, and it can be replayed whenever you like. The app speaks English, French, Spanish, German, Italian, Japanese and Chinese, and you can look for a scale in your own language. The names of the scales themselves stay as the book prints them. WHAT MAKES IT ACCURATE The book's own derivation quietly loses four chord types, and with them five scales. This app generates them too — appended at the end, so that not a single number from the printed book moves. Note spelling follows musical function rather than whatever is cheapest to compute: a minor seventh chord is written C Eb G Bb, never C D# G A#. FREE AND COMPLETE Three scales are always open: major, harmonic minor and melodic minor — and with the major come all its modes, natural minor included. You can open two more of your choice, and the ones you open stay yours. A single purchase opens all 258 scales and unlocks printing, PDF export and sharing — no subscription, no account. Nothing you write leaves your device. The app has no accounts, no advertising and no tracking of any kind, and what you play into the microphone is analysed as it arrives and never recorded, stored or sent anywhere. Reports of wrong or missing scale names are welcome: me@barbaro.it