Meet Riffer 4, the next generation of Audiomodern’s acclaimed MIDI sequencer.

For over a decade, Riffer has helped producers turn empty bars into melodies, hooks, basslines, arpeggios, and unexpected musical ideas. Now rebuilt for a new generation, Riffer 4 gives you even more ways to create, shape, remix, and make every riff your own.

Go from silence to inspiration in seconds.

Choose a key and scale, generate a riff, then shape it exactly the way you want. Adjust its range, density, timing, and feel. Edit individual notes, explore variations, and turn every generated idea into something uniquely yours.

Five Engines. Five Ways to Create.

Riffer 4 features five purpose-built generation engines, each designed with its own musical character.

Create hypnotic sequences, memorable hooks, guitar-inspired patterns, animated arpeggios, and basslines with weight - then reshape, combine, and transform them into entirely new ideas.

No single generic randomizer. 

Different engines. Different character. Endless possibilities.

Built to Keep Ideas Moving

• Generate musical MIDI riffs instantly 

• Explore five distinct creative engines 

• Work in any key and scale 

• Control note range, density, timing, and feel 

• Edit every note directly 

• Create and develop variations 

• Shape generated ideas into your own compositions 

• Export MIDI and continue working in your favorite music-making environment 

• Create melodies, hooks, basslines, arpeggios, sequences, and more 

A Decade of Riff Creation

Riffer was generating musical ideas long before generative tools became a category.

After 10 years, more than 100,000 users, and millions of generated riffs, Riffer 4 takes the original concept further than ever.

Whether you’re starting a new track, escaping a creative block, looking for an unexpected variation, or simply want something new to react to, Riffer 4 keeps ideas moving.

Create. Shape. Remix. Make It Yours.

Millions of riffs later, the next one is yours.