music.jpハイレゾ歌詞対応 音楽プレイヤー is a free music player for iPhone developed by MTI Ltd. It allows you to enjoy high-resolution audio playback and view lyrics for about 1.5 million songs for free. The app also features a karaoke mode where the lyrics change color in sync with the music, making it perfect for practicing singing. You can even play videos from your device and add music videos to your playlists for continuous playback.

Additionally, you can create your own music playlists, grouping your favorite artists or songs by mood. You can also play playlists created on your iPhone or iTunes. The app is recommended for those who want to enjoy high-quality music, view lyrics while listening to music, practice singing with karaoke mode, and those looking for a user-friendly and free music player.

Please note that some songs purchased from iTunes cannot be viewed in the app. Also, the app's automatic update function for song and album information is currently not available. To contact the developer for any inquiries, please go to the "Menu" tab and select "Help" and then "FAQ / Contact Us".