A free app for Android, by ESTsoft Corp..

ALSong Mobile is a free music player app that offers a variety of music file playback and real-time sync lyrics. The app is developed with a simple user interface and user experience, allowing for easy, intuitive control.

The app supports various file formats, such as mp3, wav, ogg, wma, flac, and others. The app can also be used as a music player for YouTube videos, offering lyrics for many popular songs.

You can use the app to search for your favorite songs, listen to popular songs, and discover new songs. It supports both YouTube videos and related videos.