Quartet 4

Quartet 4

Live jazz standards play along

4 ratings
15 reviews
$16.99
In-App Purchases

Details

  • Released
  • Updated
  • March 14, 2025
  • April 9, 2026

Features

Quartet 4 video #1 for iPhone
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About

Practice and perform jazz standards with high-quality backing tracks. Mute your instrument, change keys, adjust tempo, and loop sections for focused practice. Features animated chord diagrams and royalty-free multitrack exports for further creative use.

Live jazz backing tracks
Mute your instrument
Change key and tempo
Looping for practice
Animated chord diagrams
Multitrack export
Playlist creation
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What users say

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What's New in Quartet 4

1.3.0

April 9, 2026

Various bug fixes including bar numbers for Dark Mode

1

In-App Purchases

$39.99

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Upgrade all songs for this app

User reviews

That’s what I’m talking about! But needs a few twicks.

As I say in the title, this is a very nice sounding app. The recordings are very nice, but it could use some improvement so here’s my wish list:
1. Add a tap tempo button.
2. It would be nice to be able to make your own charts and have the band follow in different styles.
3. Not all recordings are super nice. Most of them are, but for example, Fly me to the Moon the drums are horrible.
4. There is no mixer to play with the levels of the instruments. It would be nice to have a mixer.
5. You can only export the file to M4A format it would be nice if you could export to WAV file and MP3 which are more commonly used.
6. It would also be nice if you could export the chord chart as a normal chart or have a choice to view the chords in different ways normal chart or the default way.
7. You have a choice of having the Quartet playing, having Bass and Piano or bass and Drums, but there is no way to just have Drumms only Adding a mixer with alleviate this.
8. The endings have no turn around like a lot of standards do so they end abruptly and well… it be nice if we had the choice.
9. There is no intuitive way to play your personal playlists, you have to click the Edit graphic to be able to see the list you created also as you make your list it’s displayed backwards the first file you add will show up last and the last file you make will show up first. There is a way to rearrange the list but that’s an extra unnecessary step.
10. A lot of the swing files are really fast though they sound nice that speed may not be what the audience is familiar with for example A Foggy Day is recorded at 200 bpm when the most famous recording is around 150 bpm that’s a lot of difference maybe they should have two versions of the song the one they want and the bpm tempo of the one that’s the most famous recording. Like they have two versions of Autumn Leaves.

As for bouncing:
You can bounce to stems for an extra fee or 99¢ per song, it should really be for free I mean the bundle is almost $40 and each separate is $15 a lot of music apps allow stems for free.
All in all I really like it and I recommend it but hopefully they will be developing and adding these much needed features for free.
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改善希望

1.カウントインを固定 毎回セットは不便 2.ミキサー機能が欲しい ベース音が小さすぎる ピアノトラックをミュートできるよう(各楽器が分離トラックで録音)

Superb interface

This app is another amazing addition to the quartet series. One of the most useful features is that tracks are labels as “in the style of”. As a teacher this allows me to accurately pinpoint different styles and then refer students to the original for further inspiration and language. Finally that can return to the tracks, mute the drums and work on the material they have discovered at a range of tempos 👍👍😄
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Top of the heap!

What sets this apart from other playalong apps is that the instruments are recorded ‘live’. It makes such a huge difference and really makes you want to play, unlike the dead sounding midi apps out there.The fact that you can separate the tracks and send them to yourself is an absolute masterstroke too. Don’t even think about it - buy it immediately. It will change the way you practice!
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Another fantastic quartet app

This is the latest instalment of 4 related quartet apps. This Quartet 4 continues with the same high standard of presentation, ease and performances as the previous 3. For anybody that is interested in starting or developing further into improvising and learning new tunes and/or chord changes, this app is fantastic. I use these apps all the time and the quality never fails to impress me.
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Developer apps

User experience

Requested Features

1 request

More guitar in rhythm section for future volumes

Feature

FAQ

What instruments can I practice with Quartet?

Quartet is designed for a wide range of instruments including piano, guitar, saxophone, trumpet, bass, and drums. Singers also benefit from the backing tracks. The app provides visual chord support for piano, guitar, and ukulele.

How does Quartet help with learning new tunes?

Quartet offers a wonderful play-along experience that feels like playing with a real band. The ability to loop sections, slow down audio, and view animated chord diagrams makes it fantastic for improvising and learning new tunes.

Can I use Quartet offline?

The provided data does not specify offline functionality for Quartet. It is recommended to check the app's store listing or developer website for details on offline access.

What is the update frequency for Quartet?

Quartet was last updated on 2026-04-03, indicating active development. The specific update frequency is not detailed, but this recent update suggests ongoing support and improvements.

Is Quartet suitable for beginners?

While Quartet is praised for its high-quality presentation and performance, its focus on jazz standards and advanced practice tools may appeal more to intermediate to advanced musicians. However, the visual chord support could assist beginners learning specific instruments.

What are the benefits of the multitrack export feature in Quartet?

The royalty-free multitrack export allows you to remix or develop separated parts in your preferred DAW, such as GarageBand. This offers endless creative possibilities for musicians who want to further refine or use the individual instrument tracks.

How does Quartet compare to other jazz play-along apps?

Users describe Quartet as having a superb interface, impeccably played standards, and outstanding band performances, making it feel like playing with a real band. The ability to separate and send tracks and the new playlist feature are highlighted as significant advantages.

What is the age rating for Quartet?

Quartet has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions based on maturity.