SUS4 Backing Tracks
Jam tracks for every key.
Free · In‑App Purchases
Jam tracks for every key. Transpose, slow down, isolate stems. Practice with a real musical feel.
A band in your pocket. Ready to jam.
SUS4 Backing Tracks gives you jam tracks for every key, every common style — the kind of tracks that make practice feel like a real musical situation rather than an exercise. Transpose to any key, shift the tempo up or down without pitch change, and loop a section to drill a particular passage as many times as you need.
Stem isolation lets you pull individual elements of the backing — take out the bass to work on your bass lines, isolate the chords to practice improvising over them without distraction. Play along, capture the session directly in-app, and review it afterwards.
• Jam tracks for every key and common styles
• Transpose to any key with pitch-accurate playback
• Tempo shift without pitch change
• Loop sections for focused repetition
• Stem isolation — remove or isolate individual instruments
• Subscribe monthly, or unlock the full SUS4 suite forever: 40+ tracks, stem isolation, transpose, tempo shift, and looping
All audio runs on-device. No internet required during practice.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Every advertised feature is now fully functional, Pro genuinely unlocks real features, and the new SUS4 All-Access pass unlocks all 24 SUS4 apps with a 7-day free trial. Faster and clearer throughout.
The developer, ThePaulSmith, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paul Smith
- Size
- 31.1 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SUS4 All-Access $4.99
- SUS4 Backing Tracks Pro Monthl $0.99
- Copyright
- © 2026 4chordsStudios