NexaForge

AI Vocal Separation

Isolate vocals, instrumentals, drums, bass, and more using Demucs v4 — right inside the app. No external tools needed.

Smart Lyric Sync

Tap-to-time word-level sync, or let Smart Transcribe auto-detect lyrics from the audio with Whisper AI. Fine-tune with a precision timeline editor.

CDG + MP4 Export

Export industry-standard CDG+MP3 for any karaoke player, or render styled MP4 videos with karaoke subtitles for YouTube, screens, and streaming.

Multi-Singer Duets

Assign lyrics to up to 4 singers with per-singer colors and highlight styles. Perfect for duets, group songs, and multi-part harmonies.

From Audio to Karaoke in Minutes

Import any audio file, find or transcribe the lyrics, sync them to the music, style the presentation, and export — all in one streamlined workflow.

• ✓ Import MP3, WAV, FLAC, or extract audio from MP4
• ✓ Search LrcLib for existing synced lyrics or auto-transcribe with Whisper
• ✓ Word-level timing with tap-to-time or drag-on-timeline editing
• ✓ Preview in real-time with the built-in CDG renderer

Professional Presentation Modes

Four karaoke display modes to match any style — from classic page-by-page to smooth scrolling, with full control over colors, fonts, and layout.

• ✓ Page-by-Page, Scrolling, Overwrite, and Half-by-Half modes
• ✓ Customizable text, highlight, outline, and background colors
• ✓ Title cards, countdowns, and instrumental break overlays
• ✓ Background images or solid colors for video export

Seamlessly Connected

NexaForge is part of the Nexa ecosystem. Export directly to NexaDeck for instant playback, or publish to NexaLive so your songs appear in the cloud catalog.

• ✓ One-click export to NexaDeck song library
• ✓ Publish to NexaLive cloud catalog via GraphQL
• ✓ Shared CDG rendering engine across the ecosystem
• ✓ Export to any karaoke player via standard CDG+MP3

Audio & AI

• ✓ Demucs v4 stem separation (vocals, instrumental, drums, bass, other)
• ✓ Whisper auto-transcription (tiny through large models)
• ✓ Real-time pitch and tempo adjustment
• ✓ Audio metadata extraction (ID3, Symphonia)
• ✓ Multi-stem remix with per-stem gain control

Lyric Editing

• ✓ Word-level timing with confidence scores
• ✓ Tap-to-time sync during playback
• ✓ Timeline editor with waveform, spectrogram, and pitch tracks
• ✓ LrcLib.net integration for finding existing lyrics
• ✓ LRC import/export (standard and enhanced)
• ✓ Multi-singer assignment (up to 4 voices)

CDG Creation

• ✓ Pixel-perfect CDG rendering (300×216, 16-color palette)
• ✓ Three bundled fonts (Classic, Clean, Display)
• ✓ Text outline, shadow, and anti-aliasing
• ✓ Four presentation modes with configurable line counts
• ✓ Wipe direction and highlight color customization

Video Export

• ✓ MP4 export at 720p or 1080p via FFmpeg
• ✓ ASS karaoke subtitles with word-level timing
• ✓ Title cards, countdowns, and text overlay artifacts
• ✓ Fade, slide, and zoom transitions on overlays
• ✓ Background image or solid color support
• ✓ Per-singer styled subtitles

Workspace & Tools

• ✓ DAW-inspired workspace with activity-based navigation
• ✓ Real-time CDG preview at 2× resolution
• ✓ Command palette (Cmd+K) with fuzzy search
• ✓ Auto-checkpoint every 10 minutes with undo history
• ✓ Song library for managing projects
• ✓ Interface available in 11 languages

Part of the Nexa Karaoke Ecosystem

NexaForge creates the content. NexaDeck plays it live. NexaLive connects the audience. Three tools, one seamless workflow for professional karaoke DJs.

• ✓ Export CDG+MP3 directly to NexaDeck's song library
• ✓ Publish songs to NexaLive's cloud catalog for kiosk browsing
• ✓ Shared rendering engine ensures what you create looks identical in playback
• ✓ Coming soon: batch creation tools for high-volume content producers

Creator