Elías Corsino Saldaña

Elías Corsino Saldaña is a musician and software developer from the Dominican Republic. He started learning music at age 12 — first drawn to the piano by the way a single chord could shift a room's entire mood — then picked up bass, guitar, and drums as his hunger for understanding harmony kept growing.

Bass became his main instrument. Playing in bands across genres — pop, R&B, worship, and jazz — forced him to think about harmony from the bottom up. A bassist has to know exactly which chord the band is on, which note is the root, and where the progression is going next. That experience gave him an intuitive, practical understanding of chord progressions that no textbook can fully replicate.

Over the years, he noticed a gap. Most music theory resources were either too academic — dense textbooks full of sheet music that non-readers couldn't use — or too shallow, explaining what a chord was without ever explaining why it worked in context. He wanted something in between: a tool that let you hear theory in action, instantly, without needing a piano in the room or a DAW open on your computer.

As a software developer, he had the skills to build it. As a working musician, he knew exactly what it needed to feel like. That's why he built Chord Sequence — a free, browser-based chord progression builder that runs entirely in your browser, requires no account, and lets any musician — beginner or professional — hear any progression in seconds.

The music theory articles on this site come from the same place. Every explanation of ii–V–I, every section on why the vi chord feels melancholic, every breakdown of what makes a lo-fi progression sound the way it does — these are written from years of playing these chords on real instruments, in real songs, with real musicians.

Instruments

Piano was where Elías learned to hear harmony as a whole — all voices at once, every chord spread out under his hands. Bass taught him to think about roots and movement. Guitar showed him how the same chord could be voiced in a dozen different ways, each with its own character. Drums gave him the rhythmic context that makes a progression feel alive rather than mechanical. All four feed directly into how Chord Sequence works: the playback styles, the chord voicing choices, the way rhythm interacts with harmony in the app's audio engine.

About Chord Sequence

Chord Sequence is a free, browser-based chord progression builder. No account required — just open it, add your chords, and hit play. It supports 37 chord types, 13+ rhythm styles with real audio samples, real-time transposition, and WAV export ready to drop into any DAW.

The app runs entirely in your browser. No data is sent to any server — your progressions live in your browser's local storage until you decide to export them. It works offline after the first load, and it's free — no subscription, no account, no credit card.