Frequently Asked Questions (Android)

You’ll find over 1300 jazz standards, including Swing and Latin genres, along with 87 songs from the “New Standards” book published by Berklee College of Music.

Genius Jamtracks offers 27 different styles: Swing, Open Swing, Two Feel, Ballad, Ballad Even, Open Ballad, Even 8ths, Open Even 16ths, Even 16ths, Open Even 8ths, Open Swing Brushes, Free, Mambo, Bossa Nova, Choro, Baiao, Afro Beat, Afro-Cuban, Samba, Samba Brushes, Funky Samba, Simple, Half-Time Shuffle, and Half-Time.

Currently, the option to download additional songs is unavailable. However, in the near future, you’ll be able to download more songs through the Genius Jamtracks community.

On Android, tap the three dots next to the song title and choose “Delete.” On iOS, swipe left on the song title and select “Delete.”

On Android, tap the three dots next to the song title and select “Rename.” On iOS, swipe left on the song title and choose “Rename.”

If you rename a song on Android, a new version is saved to “My Songs” with the updated name. On iOS, the song is simply renamed.

Songs are listed alphabetically in the library. If you don’t want to scroll, just use the “Search” field at the top and type the song name.

You can create a playlist directly from the “Playlists” tab by clicking the “+” symbol on the top right. Alternatively, on iOS, swipe left on the song title you want to add, and in the window that opens, you’ll get the option to add it to an existing playlist or create a new one.

On iOS, swipe left on the song title in the Library. Three options will appear: Add to playlist, Rename, and Delete — choose the first one. On Android, click on the playlist name and select the songs you'd like to add.

On Android, click the 3 dots next to the playlist name and select Edit. Deselect the song you want to remove. On iOS, find the song in the playlist, swipe right, and remove it.

Click the 3 dots next to the playlist name and choose Rename. Then enter the new name for your playlist.

Click the 3 dots next to the playlist name and choose Delete. This will remove the playlist.

No. Deleting a playlist does not remove the individual songs from your device. They will still be available in your Library.

“New Standards” is a monumental publication and effort led by Terri Lyne Carrington — multi-Grammy-winning artist, NEA Jazz Master, and founder/artistic director of the Berklee Institute of Jazz and Gender Justice. We added this not only because of its value in highlighting the historical omission of women composers in jazz, but also because the music is simply amazing.

“New Standards” is a monumental publication curated by Terri Lyne Carrington. The book includes compositions spanning nearly a century — from Lil Hardin Armstrong’s work in 1922 to pieces written in 2021 by recent Berklee graduates. It features 101 compositions by a remarkable range of acknowledged titans, young visionaries, and unsung heroes of jazz. These pieces serve as powerful alternatives to the traditional jazz standard canon. Genius Jamtracks is proud to include this playlist as part of our mission to offer students and musicians meaningful, high-quality practice tools. This is not just a beautiful collection of music — it’s a timely and essential statement.

To change the style of a song, tap the pencil icon at the top right to enter edit mode. Press “Style” and choose your preferred style. The style will be applied to the bar selected on the chart. If you want it applied to the whole song, make sure the first bar is selected. You can add as many style changes as you want — not just at section starts but at any bar.

To activate the metronome, tap the “Mixer” icon at the bottom right and bring up the metronome volume slider until it reaches the desired level.

Tap the “Mixer” icon at the bottom right and use the sliders to adjust the volume of each instrument to your liking.

Create a playlist, name it, and add your favorite songs for quick access without searching the library. On iOS, swipe left on a song title and choose “Add to playlist.” On Android, click the playlist name and select the songs you’d like.

On Android, tap the three dots next to the song title and select “Rename.” On iOS, swipe left on the song title and choose “Rename.”

Go to the “Playlists” tab and tap the “+” icon at the top right. On iOS, you can also swipe left on a song and select the option to add it to an existing or new playlist.

On iOS, swipe left on a song title and choose “Add to playlist.” On Android, tap on the playlist name and select the songs you want to add.

Go to the Settings tab (bottom right). At the top, tap “Instrument Transpose” and select your instrument’s transposition. This is a master setting, so you only need to set it once. Charts will appear transposed accordingly.

Polyrhythms are at the core of Genius Jamtracks. From subtle displacements to full-on rhythmic puzzles, dive deeper and shape your practice with intentional rhythmic exploration.

By pressing the “Rhythm” button, you access the Level, Groupings, and Ratios tabs, where you can experiment with and control the rhythmic content. Based on your choices, the app introduces polyrhythmic phrases — from simple and familiar to more advanced and challenging.

A polyrhythm is the combination of two or more different rhythms that follow the same pulse. For example, in a 4/4 measure, one layer could play in 4 while another divides the measure into 3 beats — a 3:4 or 'three against four' polyrhythm. When played together, they form a complex, unified rhythmic phrase.

All three introduce polyrhythms, but in different ways. 'Level' controls how complex the rhythm is without letting you pick the exact patterns. Level 1 has no polyrhythms, Level 2 introduces basic ones (e.g. dotted rhythms, 3:4), and higher levels include complex phrases like triplets in groups of 17. With 'Groupings' and 'Ratios', you pick the specific polyrhythm. Groupings are based on note values (e.g. eighth notes) and how many fit into a cycle. Ratios describe the relationship between the main rhythm and the superimposed rhythm (e.g. 3:4).

In Groupings mode, use the left wheel to select the note value (e.g. 8th notes) and the right wheel to pick how many of those notes complete the rhythmic cycle. Note: available options vary with tempo, since not all groupings fit well at all speeds.

Ratios describe the relationship between the main song rhythm and a superimposed rhythm. For example, in 4/4, layering 3 evenly spaced beats gives a 3:4 ratio — a classic polyrhythmic feel.

No — you choose which instruments apply the selected rhythm. Under the wheel pickers, tap the instrument names to enable or disable polyrhythmic phrasing for each. You can have just drums play it, or piano and bass, or any combination.

Not all polyrhythms work in every tempo. Some phrases sound awkward if played too fast or too slow, so they’re disabled depending on the current tempo — just like how swing feel evolves with speed.

Yes! Visit our website to watch users in action, including a detailed series by the amazing Sami Amiris — exploring, practicing, and applying polyrhythms in musical settings.

https://geniusjamtracks.com/videos

This is where you can adjust the harmonic complexity of the playback — from simplified triads to advanced reharmonizations. On Level 1, you’ll hear triads. As you move up the levels, the harmony becomes richer: Level 2 plays exactly what’s written on the chart; Level 3 introduces jazz piano voicings; Level 4 adds basic substitutions; and Level 5 brings more advanced substitutions and creative reharmonizations. Whether you set a specific harmonic level or just press play and let Genius Jamtracks create your session, you'll still get voice-led piano comping and melodic, reactive bass lines.

Level 1: Triads
Level 2: Exactly what's written on the chart
Level 3: Jazz harmony with standard voicings
Level 4: Basic harmonic substitutions
Level 5: Advanced substitutions and reharmonizations

Yes. Set the Harmony Level to 2 to hear exactly what’s written on the chart.

This unique feature lets you shift the time feel of each individual player. Experiment with having any of the trio play ahead of the beat, behind the beat, or right on it. You can fine-tune each instrument's placement in relation to the pulse.

“In Front” and “Behind” refer to how early or late a note is played relative to the metronomic beat. Playing behind the beat gives a laid-back, relaxed feel. Playing in front of it gives energy and forward momentum.

Yes, Time Placement settings are autosaved and apply globally across all songs as a master setting.

Tap the metronome icon (bottom left), then adjust the tempo using the up/down arrows, the slider, or by tapping the tempo. Changing the tempo also influences the trio’s polyrhythmic phrasing and stylistic choices.

Tap the 'Key' label and select the key you want to practice in. Your selection will be saved and remembered next time you return to that song.

Yes. You can choose how many choruses you want — from just one to infinite looping.

Yes. Set the Harmony Level to 2 to hear exactly what’s written on the chart.

Yes. Changing the tempo not only adjusts speed but also affects the trio’s stylistic feel and available polyrhythms. GJT adapts to match the vibe and phrasing typical of that tempo range.

Yes. Tap the “Mixer” icon (bottom right) to control each instrument’s volume, including the metronome.

The pencil icon has been moved as more features have been added recently. To access editing options, simply long press anywhere on the chart and a new view with the editing tools will appear.

After editing a song, you can press 'Save' to overwrite the existing version in your library. Alternatively, tap the pencil icon next to the song title to rename it before saving — this keeps the original and saves your version separately under a new name.

You can add up to 4 chords per bar in any time signature, except for 3/4, which allows up to 3 chords per bar.

Enter your chord as usual, then press the slash button (“ / ”) and select the bass note to complete the slash chord.

A slash chord indicates a chord with a specific bass note or inversion, shown after a slash (e.g., C/E). Tap the slash button (“ / ”) to access the list of bass notes and build your chord.

Start by tapping the “+” button in the Library. Follow the steps to set up the song form, time signature, key, and style. When finished, tap “Done” to begin crafting your song by adding chords and finalizing the chart.

Absolutely. Just click the Edit button (pencil icon at the top right) to change any of those parameters.

Customize your song’s structure by using the left Barline button to edit the left barline of a selected bar and the right Barline button for the right side.

Enter Edit mode (pencil icon), go to the Song Form tab, and press the “Add bar” button.

In Edit mode, go to the Song Form tab and use the “Delete bar” button to remove a bar.

While in Edit mode, open the Song Form tab and tap “Add intro” to include an Intro section.

In Edit mode, go to the Song Form tab and tap “Add Coda” to create a Coda section.

The Coda symbol (a circle with a cross) marks a unique section of the song. Place it at the beginning of the Coda section. During playback, the musicians will jump to that point when they reach the symbol earlier in the chart.

Open the Edit mode, go to the Song Form tab, and tap “Add Section.”

Nope! There’s no limit — feel free to add as many sections as you need.

The Solo section loops for as many times as specified in the repeat count settings.

Absolutely! In Edit mode, go to the Song Form tab and tap “Style.” You’ll get a list of 27 style options, and you can apply a different one to each bar.

In Edit mode, use the “Ending” button in the Song Form tab. Just make sure you’ve added a repeat end barline after the ending to keep the form correct.

Tap the Edit button, go to the Song Form tab, and press “Time Signature.” You can choose from 3/4 up to 17/4 and apply different time signatures to individual bars if needed.

Accents emphasize certain beats with a short drum break and coordinated hits from piano and bass. Select the bar and beat, then press the Accent button to toggle between Downbeat and Upbeat accents.

Go to the Settings tab (bottom right in the main view). At the top, you’ll find 'Instrument Transpose.' Click it and select your instrument’s transposition. This is a master setting — all charts will appear transposed from now on.

In the Settings tab, on Android tap 'Rate App in PlayStore'; on iOS tap 'Rate App in AppStore.' You’ll be redirected to the appropriate store where you can leave your review. Your support means the world to us!

Go to the Settings tab (bottom right), and you’ll see the version of the app installed on your device. Be sure to keep it up to date — we regularly release new features and improvements.