動画カラオケJOYSOUND ムービーで練習 is a free multimedia application for Android devices developed by XING INC. This app provides access to JOYSOUND's CROSSO/f1 karaoke data, so you can sing along to your favorite songs with guide vocals and training from professional singers. With a monthly subscription fee of 300 yen (excluding tax), you can enjoy unlimited singing of all the songs available on the app, just like in a karaoke box.

The app's features include guide vocals for each song, vocal and singing technique instructions by professionals, and background videos featuring the artists or anime related to the song. You can also use the real-time ranking and genre-specific ranking to check the most popular songs, and the search function to find specific songs or artists. Moreover, the app allows you to bookmark your favorite songs and use coupons for discounts at JOYSOUND stores nationwide.

Overall, this app is a must-have for karaoke enthusiasts who want to improve their singing skills and enjoy singing with high-quality karaoke data on their Android devices.