Contrapunctus vs SEPBLOOM LABS

Give your melody a second voice. Contrapunctus writes counterpoint. Draw a melody on a simple grid — or import a MIDI or MusicXML file — and it composes a genuinely independent second line against it: real first-species counterpoint, obeying the voice-leading rules right down to the cadence. HOW IT WORKS • Draw a melody on the timeline (leave a gap for a rest), import MIDI/MusicXML, or type it in. • Contrapunctus generates a legal counter-line above or below, updating live. • Cycle the distinct valid options — ranked best first — and pick the one your ear likes. • Shape it with two dials: how strictly it favors sweet 3rds and 6ths, and how independently the voice moves. WHAT'S INSIDE • A real rule engine — no parallel fifths or octaves, proper cadences, and a musica-ficta toggle that raises the leading tone in modal keys. • Works in every mode: major, dorian, aeolian and the rest. • Live standard-notation preview of both voices. • MIDI and MusicXML import and export — for MuseScore, Sibelius, Dorico, Finale, or your DAW. • Fully offline. No account, no sign-in, no ads, no in-app purchases. • Private by design — Contrapunctus collects nothing. Your music never leaves your phone unless you export it. Contrapunctus is by Songdeed.

SEPBLOOM LABS brings images, sound and touch into one quiet creative space. Import an image or create a short text composition. Explore a continuous particle field with orbit, zoom, attraction and depth. Choose organic motion presets or fluid textures from the MOTION panel. Import your own music to drive breathing, curls and flowing movement. Song analysis guides gradual transitions into floating particles during energetic passages, then back toward the image as the music settles. PLAY turns the canvas into an instrument. Choose a sound, root and scale, then play the multitouch keyboard. Shape expression with vertical finger movement, explore chords, or adjust envelope, filter, LFO and space. Felt, Clear and Dream offer different starting points. Record particle videos with imported music or your live performance, then preview, share or save them to Photos. Light and dark themes keep the focus on your work. Works locally on iPhone and iPad. No account is required. Music files are supplied by you; use content you have permission to share. AI music generation is not included in this release.