Here you can download Yass, a graphical editor for creating, finetuning, organizing and printing Ultrastar karaoke songs.

It is free to use.

Latest stable release (Jan 2024, requires Java 1.8)

Changes are listed in the Changelog.

Other releases

Yass uses: Java Look & Feel Graphics Repository, JavaZoom JLayer / MP3SP / VorbisSPI and Tritonus Sequencer, iText, Jazzy Spell Checker, JInput, TeX Hyphenator, VFFMpeg Objects (fobs), Java Media Framework (JMF), Robert Eckstein’s Wizard code, and juniversalchardet.

Licenses are stated in the application’s help section.

Speed measure ‘Inverse Duration’ based on Marcel Taeumel’s approach (

Open Source

Source code can be found at


Copyright (C) 2009-2022 Saruta

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see