Lời bài hát Vọng cổ is an Android application developed by HaDoSolution, available for free in the Lifestyle category. With over 1150 songs, this app allows you to search for lyrics of ancient songs, excerpts of Cai Luong, amateurs' songs, and melodies. The app offers several features, including searching for songs by various criteria, marking favorite songs, backup and restore of favorite songs to SdCard, and not turning off the screen when viewing details. Users can also request or contribute lyrics to integrate into the application at the email address provided. The app is in the process of finalizing in terms of content and form, and the developers welcome suggestions from users to improve further in the next update. For any comments on the app, please email