• Make sure you have recently calibrated Solo.

• Go to Settings > Note Detection Sensitivity.

• Watch the video to guide you through the calibration process.

Get in touch if you’re still having issues.

• Check that your audio interface is compatible with iOS and that you’re using the correct cables.

• Plug your guitar into input 1 or 2 on your audio interface - make sure you then select the input you are using in Settings > Audio Input.

• Set your input gain levels correctly on your audio interface input so that you are achieving a good signal level without clipping - refer to your audio interface manual for this step.

• Go to Settings > Note Detection Sensitivity > Start Calibration.

• Watch the help video on the calibration screen for help with this step.

The interval trainer requires you to select at least one intervallic function in order to start a workout.

• Tap Choose Intervallic Functions.

• Make your selection.

• Slide the Intervallic Function selection panel back down.

• The “Start Intervallic Function Workout” button will now be blue, ready to go.

The changes trainer requires you to select a set of chord changes and a level in order to start a workout.

• Tap on Select Chord Changes.

• Make your selection from the list.

• Tap on Select a Level.

• Make you selection from the list.

• The Start Changes Workout button will now be blue, ready to go.

The scale trainer requires you to select a scale in order to start a workout.

• Tap on Select a Scale.

• Make your selection from the list.

• The Start Scale Workout button will now be blue, ready to go.

Once you’ve started a workout, tap and hold anywhere on the screen to exit.

Check the Advance to Next Note setting in the workout setup screen. If you have On Tap selected, you need to tap on the screen (not on the fretboard if it’s displayed) to progress to the next note.

Check that you have the correct instrument (and tuning) selected.

• Go to Settings > Instrument

• Make you selection from the pop-up list.

The fretboard is only available in the Notes and Intervals trainers. You can access the fretboard in those trainers by turning on Show Fretboard in the workout setup screens, or by swiping from right to left whilst in a workout.

If the option to show the fretboard is not appearing, or it cannot be swiped onto the focus screen, make sure you have the correct instrument selected in the Solo’s settings. The fretboard cannot be used if Bb/Eb Horn, Concert Pitch or Concert Pitch-1 settings are used.

Tap the Settings icon in the top right of the app.

Select the appropriate guitar or bass setting from the Instrument list pop-up.

The workout options in the Changes Trainer are tied to certain levels. For example, if you select a level with a single chord tone, the Random and Reverse options won’t be available under Interval Order as they wouldn’t make sense for that level. If you can’t see a workout option available for a particular level, it’s either not applicable to that level or wouldn’t make sense.

We decided that, since the Changes Trainer is designed to take a workout through an entire chord progression or exercise, the concept of duration didn’t make sense here. The duration of your workout is instead determined by how long it takes you to get through the chosen chord progression and level you’ve selected.

In the Changes Trainer, the Single Chord Exercises & Basic Chord Progressions are designed with the Randomise Key On Repeat feature in mind. When you select Ex.1 to Ex.24 be sure to turn on Repeat and Randomize Key On Repeat.

Due to the way many jazz standards and modern chord progressions modulate frequently to new keys for short periods of time, it’s very complex to program an app that can understand the subtleties of enharmonic spellings throughout these temporary modulations.

When using the transpose function, Solo will always show you the ‘correct’ chord and intervallic functions, but occasionally you will see an incorrect enharmonic spelling of a root note. We are actively working on finding a solution for this issue.

It’s very important that, from time to time, you go into the settings within Solo and use the ‘Backup Custom Chord Progressions’ feature. This will backup all of your custom chord progressions into a single file. We recommend keeping a recent copy of this file in your iCloud storage or on a separate device, as uninstalling Solo or resetting your device will also remove all of your custom chord progressions from the app. You can re-import your custom chord progressions into a fresh install of Solo by simply tapping on this backup file at any time.

Solo uses chord/scale relationships to determine the ‘function’ of each chord that you enter into a custom chord progression. If you are seeing ‘surprising’ intervallic functions for a given chord, it may be that you have the ‘wrong’ scale chosen in the custom chord progression editor to achieve the harmonic result you need. Edit the chord progression and choose the scale that best works for your desired harmonic function. This is an advanced feature that requires a working knowledge of chord/scale relationships and jazz harmony.