Suno v4.5+ Features Guide: Vocal Swap, Flip, and Spark

Published by Jack Righteous • July 17, 2025

Welcome to the Upgrade: What is Suno v4.5+?

Just announced by Suno on July 17, 2025, version v4.5+ is not a full new version—but it unlocks entirely new creative tools. If you’ve been using v4.5 for Covers, Remasters, and editing with Replace or Extend, v4.5+ is your remix playground.

What’s New in v4.5+?

• Vocal Swap – change the singer on any of your tracks using Personas or custom prompts
• Instrumental Flip – transform the backing track or generate a new one under existing vocals
• Spark from Playlist – generate a new track inspired by a playlist’s sound, style, or energy

Feature Breakdown: What They Do and How to Use Them

1. Vocal Swap: Change the Voice

From any of your own tracks, you can now swap in a new voice. Under the hood, this behaves like applying a new Persona via the Cover tool—keeping your lyrics and melody intact, but re-singing them in a new tone, style, or gender. You’ll find this under the “...” menu in your Library.

Pro Tip: Combine Vocal Swap with Replace Section to fine-tune delivery. If timing sounds off, regenerate with lower Weirdness or test a different Persona prompt.

2. Instrumental Flip: Rebuild the Beat

This lets you remix or fully transform the background music. Useful for turning a pop song into a jazz version, or layering trap beats onto acoustic lyrics. It mirrors the behavior of a Style-heavy Cover but gives more direct control.

Try This: Start with an instrumental-only version → Flip → then add vocals via Replace or Cover. Or take a vocal-led track and rebuild the groove underneath.

3. Spark from Playlist: Prompt with Sound, Not Text

The biggest new shift—Spark lets you use a playlist as a prompt. Feed in 5–10 songs (via Suno or possibly Spotify integration) and let the model analyze and create something new that matches the emotional arc, tempo range, and instrumentation across the list.

Best for: Curated mood lists, cohesive genre testing, or reimagining old favorites with modern AI production.

Testing Matrix: What You Should Try First

• Pick one song → Swap vocals → Remaster
• Take your best 30s loop → Flip instrumental → Extend
• Create a playlist → Spark → Replace chorus → Cover again

Integration with Your Existing Toolkit

All v4.5+ features support:

• Extend – to go up to 8 minutes
• Replace Section – rewrite 30s chunks of any result
• Cover + Persona chaining – style-shift + voice-swap together
• Remaster – two AI-mixed versions for quality control

Compare to v4.5: What Changed?

Feature	v4.5	v4.5+
Cover	Yes	Yes (expanded with direct voice/instrument flip)
Persona	Yes (manual)	Yes (swap interface is faster)
Replace Section	Yes	Yes
Spark from Playlist	No	NEW

Want More?

This article is part of a complete Suno AI expert training series by Jack Righteous.

• Part 1 – Where to Put Your Prompt
• Part 2 – Structured Song Building
• Remix Guide
• In-Song Editor Tools

Ready to Test It Yourself?

Make sure you’re on the Pro or Premier plan to unlock v4.5+ features. For the most precise testing:

• Use Side-by-Side comparisons (generate with/without swap or flip)
• Track results in your Prompt Log or Toolkit
• Drop results in the Facebook Group or tag @jackrighteousmusic

Let’s make v4.5+ your remix revolution. Start experimenting—and let Suno meet your sound halfway.