Build an Online Karaoke Singing App
Design an interactive karaoke app that lets users sing over instrumental tracks, view synced lyrics, record their voice, and share the final performance—a fun and engaging app development idea for music lovers.Karaoke apps are a hit among music lovers and casual singers. Building one gives you experience in audio mixing, real-time lyrics synchronization, recording features, and file handling. This app development project is perfect for merging creativity with multimedia technology.
Users can choose songs, sing along while reading on-screen lyrics, record their voice over the instrumental track, and save or share their performances. Additional features like duet mode, pitch correction, and applause sound effects make the app more fun.
Lyrics Sync and Karaoke Playback
Display synced lyrics line-by-line as the backing track plays, with timing control and karaoke-style highlighting.
Live Singing and Voice Recording
Capture microphone input in real-time and mix it with the instrumental track to create a combined recording.
Song Library and Search
Provide a searchable catalog of karaoke tracks categorized by genre, language, or popularity.
Save and Share Recordings
Allow users to download their recordings or share them to social platforms directly from the app.
The user picks a song and starts singing while the backing track plays. As lyrics scroll in sync, the app records their voice. After the performance, the app mixes the voice with the background music and creates a final audio file that can be saved or shared.
- Browse or search karaoke tracks and choose a song to perform.
- Sing along while the lyrics display on-screen with real-time sync.
- The app records the user's voice while the instrumental track plays in the background.
- After completion, the audio is processed into a single output file with mixing and basic enhancements.
- Users can play back, save, or share their recording via social media or cloud storage.
Frontend
React Native or Flutter with lyric display UI, waveform visualization, and recording controls.
Audio & Recording
Expo Audio, react-native-audio-recorder-player, or Flutter Sound for handling recording and playback.
Backend
Firebase for user data, cloud storage of audio files, and song metadata management.
Other Tools
FFmpeg for audio mixing, Lottie for UI animations, and Firebase Cloud Messaging for notifications.
1. Build Karaoke Song Player with Lyrics Sync
Create a player that streams karaoke tracks and displays lyrics in sync using timestamps.
2. Implement Voice Recording and Playback
Capture the user’s voice while the music plays and allow previewing it immediately after singing.
3. Mix Instrumental + Voice
Use FFmpeg or similar libraries to combine voice and background track into a single output file.
4. Add Save and Share Options
Enable users to download their recordings or share them directly to WhatsApp, Instagram, or YouTube Shorts.
5. Add Duet or Group Singing Mode
Allow two users to record parts of a song and combine their tracks in a duet-style layout.
Let the World Hear Your Voice
Build a music-rich karaoke app that gives users the joy of singing, recording, and sharing—an expressive and multimedia-heavy app development project.
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