UltraStar Play is a very popular free and open-source karaoke singing game with song editor for desktop, mobile, and smart TV, developed using Unity. It is inspired by the classic Singstar and UltraStar music game series. With support for multiple languages and platforms, it offers a versatile and accessible experience for music lovers of all ages and skill levels.

TouchDesigner is a node-based visual development platform for creating real-time and interactive multimedia content on Windows and Mac platforms, developed by Derivative from Canada. It's been used by artists, programmers, creative coders, software designers, and performers to create performances, installations, and fixed media works.

Using professional host audio application + software synthesizer to make music has unimaginable difficulties for computer users who love music but don't understand the music theory at all. Because it means that the knowledge you have to learn first about music itself and music creation software is really too much, just too much to bear.

Let AppNee tell you a fact, most of excellent BGM (background music) only can be found in some short videos or movies, which you can't search or download from any other places. At this point, we have to manage to extract the audio tracks from these videos. Directly converting video to audio formats always makes us feel unreliable, although extracting audio tracks is likely to be just a high-quality format conversion. In a word, "extract" always sounds better than "convert" to guarantee the quality of audio, isn't it?