Composer is a song editor for creating (and converting) notes for music games in various formats. It attempts to make the process easy by automating as much as possible while providing a simple and attractive interface to do the remaining manual work.

Homepage: http://performous.org/composer

• Song pitch analysis based on the esteemed algorithms from Performous.
• Zoomable interface to quickly get an overview or doing very precise timing.
• Possibility to synthesize the notes to get a feel of their "sound".
• Import/export in various formats including:
  • SingStar XML
  • UltraStar TXT
  • Frets on Fire MIDI
  • LRC