SUS4 Backing Tracks: Jam Along
Blues, jazz, funk in any key
Free · In‑App Purchases
A drum, bass and keys band in any key and tempo. Blues, jazz ii-V-I, funk, gospel, Latin and more. Mute a part and play it yourself. Works offline.
A drum, bass and keys band to improvise over, in the style and key you pick.
Blues, jazz ii-V-I, funk, gospel, hip-hop, Latin, R&B, reggae and more, generated on your phone, so it works with no signal.
Fully on-device: no cloud, no account.
Choose a style and a key, set the tempo, and play. Use Solo Me to drop a part out and play it yourself: take the bass out and you are the bass player. Write a chord progression in the editor when the library does not have the changes you need.
• Tracks by style, each labeled with its key and tempo
• Change key and tempo
• Solo Me: mute a part and play it
• A chord progression editor for other changes
• Loop a section to work on it
For guitarists, bassists and keyboard players learning to solo, and anyone who wants to practice with a band instead of a metronome.
Pro, or SUS4 All-Access across the whole range, opens the full track library, key and tempo changes, looping and stem export.
Made in the UK by working musicians.
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.
SUS4 now speaks your language: the app is available in 50 languages.
Any lifetime purchase now unlocks every SUS4 app.
A clearer upgrade screen, plus fixes and polish 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
- 46.7 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 and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SUS4 All-Access $4.99
- SUS4 Backing Tracks Pro Monthl $0.99
- SUS4 Backing Tracks Lifetime $59.99
- Copyright
- © 2026 4chords Studios