zelva

Simple, high-quality software that never breaks your flow

About Us

What We Do

zelva plans, develops, and delivers software and web applications. In addition to our own products, we also offer consulting on software planning and development for creators and businesses.

Key Products

notave — a browser-based tool for creating clean, professional guitar TAB with minimal effort. accolva — a collaborative arranging tool for writing one band score together. Both are free to start and run entirely in the browser.

Development & Technical Management

We have translated business requirements into technical specifications and provided end-to-end support from architecture design to project management. We bring deep expertise in desktop application development with C++/Qt/JUCE and audio/media processing software, serving as a playing manager who resolves challenges on both technical and operational fronts.

We are not currently accepting new consulting inquiries. Any change will be announced on this page.

Blog

Practice Guitar TAB Along With the Record — Play a YouTube Video or Audio File in Sync With the Sheet

Practicing TAB along with the original means juggling a video player and a tab app, and losing your place every time you want to hear a bar again. In notave you attach an audio file or a YouTube video to the sheet, and play, pause, bar skips and the loop all carry the record along. Anchoring takes one number — which second of the clip bar 1 falls on. Here is how to run a practice session on it, and how to check your part before shooting a play-through video.

Auto-Suggest Fingerings for Guitar TAB — Pick One and the Notes Fall Under Your Fingers

TAB converted from MIDI or sheet music, or typed in as it came, can have every note right and still be awkward under the fingers. In notave, right-click a bar and choose "Re-finger" — the pitches stay, only the strings and frets change. How to use the four candidates — keep position, low position, high position, fewest string crossings — and where this fits in practice and play-through videos.

MIDI and MusicXML into sheet music your band can share — settle it before the first rehearsal

A band's song usually lives in everyone's head in a slightly different version, and the differences surface while five people are standing in a room they are paying for by the hour. accolva turns the MIDI or MusicXML file you already have into one score in the browser, and shares it with a link. Everyone reads the same sheet and writes their feedback on the bar it belongs to, so the rehearsal can start from what you already agreed on. Nothing to install, free to start.

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