Designed from the ground up for music composition.
Used by thousands of composers since 2010.
RapidComposer is an innovative, phrase-based music composition tool, offering a flexible, non-destructive workflow tailored for composers, songwriters, and musicians of all genres. RapidComposer makes it easy to turn your musical ideas into reality.
Latest News:
February 9, 2026: RapidComposer v6.0.7 released
November 15, 2025: 41 Realtime posted new videos about "Live mode" and other tutorials: Live mode 1 - 2 - 3, Tutorial 1 - 2 - 3 - 4 - 5
October 8, 2025: RapidComposer 6 released! See what’s new in this version.
April, 2025: RapidComposer 15th Anniversary!
Upgrade to version 6 with a discount! Read upgrade info
Effortlessly craft rich chord progressions and utilize piano-style phrases, even without prior piano experience. Auto-harmonize melodies, receive chord suggestions, and load MIDI files with built-in chord detection. With tools like the chord palette and the Circle of Fifths chart, RapidComposer provides constant support to enhance your songwriting process.
Phrases automatically adapt to the current chord and scale on the master track, eliminating the need to adjust individual notes. Simply lay out chords on the master track or drop in a chord progression, and with a single keystroke, generate a harmony track with flawless voice leading. Start composing with ease today!
Included rhythm and phrase generators allow for creating a wide range of patterns, both monophonic and polyphonic. Generate melodies, apply variations to modify phrases non-destructively, and easily slice or adjust the rhythm of existing phrases.
Leverage an intelligent algorithm to generate optimal guitar chord fingerings based on your specific constraints. Easily edit fingerings directly on the fretboard. Convert tracks into editable guitar tablature with calculated, optimized fingerings. Export tabs seamlessly in MusicXML format for further use.
Suggestions by harmonic rules, borrowed chords, chord substitutions, pivot chords, diatonic and chromatic mediant chords, passing chords, bass and melody pedal tone chords, chords on scale, chord builder, chord voicing editor. With these tools, you'll always have guidance for selecting the perfect chords.
RapidComposer provides multiple methods for selecting chords for the master track or progressions, including the Tonnetz and Circle of Fifths. Chord buttons can be color-coded by consonance, common tones, tonality, or suggestions. Customize chord rules for progressions and apply chord voicings to individual tracks, phrases, or the master track.
With it, you can instantly create new multi-track compositions or phrases, or even let the engine continue an existing melody or arrangement. It’s a powerful way to spark creativity and explore new musical ideas inside RapidComposer.
* Full Edition only
Trigger and perform sections of your composition from a MIDI keyboard in real time, with per-track speed, transpose, and timing controls. Mouse triggering also supported. With LIVE Playback Mode in RapidComposer 6, your compositions are no longer static: they become expressive, playable instruments.
* Full Edition only
The AI assistant, available in both full and light editions, offers intelligent suggestions for chord replacements, progressions, rules, and even song structure based on the genre or mood you specify. Powered by AI models from multiple providers, this feature requires an API key from a supported service.
RapidComposer generates multi-track compositions with chords based on your settings and phrases, supporting a variety of workflows. It's designed to inspire creativity, even when you're not short on ideas.
* Full Edition only
Melodya is a motive generator and editor, which was integrated into RapidComposer as a Melody Editor tab. By enabling the chords track, you can create a melody for a given chord progression, so two entirely different workflows are supported.
* Full Edition only
The extensive libraries for chords, scales, and chord progressions are fully expandable. Use the docked browsers to search, preview, sort, group, and display items. Additionally, a file browser and a CC envelope browser have been included for enhanced navigation.
The 2019 collaboration "Yo x Ti, Tú x Mi" by Spanish powerhouse Rosalía and Puerto Rican reggaeton star Ozuna stands as a definitive moment in the globalization of contemporary Latin music. Far more than a simple catchy summer hit, the track represents a sophisticated blending of genres, cultures, and lyrical themes that redefined the "urban" sound of the late 2010s. Lyrical Meaning and Themes
: Rosalía’s vocal runs and the subtle use of Caribbean steel drums create a "tropical-flamenco" hybrid that was unique at the time of its release. rosalia_ozuna_yo_x_ti_tu_x_mi_letra_lyrics
At the time of its release, "Yo x Ti, Tú x Mi" was a significant crossover event. It bridged the gap between the European "Nuevo Flamenco" movement led by Rosalía and the established Caribbean reggaeton scene dominated by artists like Ozuna. The song was a commercial juggernaut, winning two Latin Grammys for and Best Urban Song , cementing its status as a critical and commercial success. Conclusion The 2019 collaboration "Yo x Ti, Tú x
: The heartbeat of reggaeton, providing the danceable foundation. At the time of its release, "Yo x
"Yo x Ti, Tú x Mi" remains a staple of modern Latin music because it balances commercial appeal with artistic integrity. Through its lyrics of mutual loyalty and its innovative production, Rosalía and Ozuna proved that the "urban" genre could be elevated with experimental sounds while still maintaining the infectious energy required for a global hit.
The title and central hook, "Yo por ti, tú por mí" (Me for you, you for me), establishes a theme of intense, reciprocal devotion. The lyrics describe a "ride or die" relationship where the two protagonists are completely synchronized. Rosalía’s verses bring a sense of poetic romanticism, while Ozuna’s signature smooth vocals ground the track in the world of modern reggaeton. Together, they create a narrative of a private world shared between two lovers, shielded from the outside gaze. Genre-Bending Production
: The chorus is designed with a "less is more" approach, making it instantly memorable and universally accessible across language barriers. Cultural Impact
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