Visualize the fretboard, master scales and play through changes like a pro with intervallic functions!

‣ Solo is a revolutionary practice tool designed by world renowned fusion guitarists Tom Quayle and David Beebee.

‣ One of the biggest barriers to improvising on guitar is finding and mapping out the relevant chord tones and scales all over on the fretboard in real time.

Solo is a highly focussed app for developing your note finding and visualization ability on the guitar. There is no time-based pressure and Solo reduces the cognitive load of having to choose which ‘notes/intervals’ to play. As you get quicker at finding these ‘notes’ you will conversely get better at choosing them whilst improvising. Players of all ability levels will reap huge benefits from practicing with Solo.

‣ Using common progressions, Solo presents you with one chord symbol or scale at a time and asks you to find and play a series of notes based on their intervallic function.

‣ Solo listens to the notes you play, analyzes them in real time, and doesn’t move on until you’ve correctly found each note by its intervallic function in the specified order.

‣ This process builds strong fretboard visualization for the most powerful, efficient and malleable way to KNOW your way around the fretboard no matter how difficult the chord changes are.

As a unique and powerful ear training tool, Solo also develops your ability to not only visualize what you’re playing, but hear it in real time too.

If you know your note names but struggle to learn new scales, play through chord changes or find yourself stuck in pattern based playing, practicing diligently with Solo will be transformational for your knowledge of the fretboard and subsequently your ability to outline harmony when you improvise.

Practice finding intervallic functions over a series of chord changes based on common and popular chord progressions. Solo is programmed with all the knowledge behind the scenes to understand jazz and popular music harmony and will always pick appropriate intervallic functions based on the harmony of the progression.

Practice finding intervallic functions within scales on the fretboard. Solo includes all the modes of the Major, Melodic Minor, Harmonic Minor and Harmonic Major scales, plus pentatonic and symmetrical scales. Seeing and finding scale tones as intervallic functions will transform your ability to manipulate and improvise with scales in real time.

Solo also includes video tutorials to get you started with intervallic functions, how to find them on the fretboard, using Solo for ear training and how to get the most from your practice time with the app.

No registration or account required.

What’s New

Version 1.4.3

Fixed bug in Ionian Augmented scale

Ratings and Reviews

4.8 out of 5
95 Ratings

95 Ratings

Gordette ,

The FIRST beneficial guitar APP!! Open the gate of music!

Tom is a great guitarist and instructor. I have several of his courses from his website. I saw he had came out with this app. And just knew if he had anything in putting it together it would be awesome.
Firstly this is the way to learn guitar, sadly it took 12 years of playing for this stuff to start showing up in my playing. Will definitely hit a wall in progress with playing if not thinking of target notes and the intervallic structure of chords/scales. It’s crazy I’ve been thinking of a way to practice this stuff in this way like flash cards or something! Guess that’s why I’m writing the review and Tom made the app! But extremely grateful for this contribution to the art and if a lot of young guys start using and learning this way it will change music!

XXXX-15 ,

Very efficient

Over many years i have spent a lot of cash on music books, videos, cd’s, incompetent teaching methods, name it iv’e probably owned it. You could say that i am a well rounded guitar manipulator, as the saying goes “a player of many, a master of none”. This app is exactly what it says, it is a help- mate. Meaning, no matter what curriculum you choose it all comes down to putting your time in.
This app will give you some very powerful platforms to work from, its up to you to perform those platforms. I would honestly and will, tell my friends about this app, because it has substance with only as much difficulty to challenge you to put your time in. For me, I have over the years been very fortunate to be in bands as a vocalist, not having to play guitar all the time. But really, within those bands I was left behind as far as guitar abilities. So, my point is, yes get this app, but don’t forget you must put in the time. You cannot avoid it, if you wish to fulfill your dreams, do your time.
I wish you all of the fortune out there to get. Godbless
And to those who created this app, job well done, i will use this app as a reference for work, and also when i practice. I practice no less than 3 hours a day, and sometimes up and to 8 hours. Goodluck
Burley Lerux

Jimcogneato ,

Seriously key learning tool

I’m a couple days in on a self structured practice routine (one of the good things and hard things about this app, you have freedom and responsibility in deciding how you’ll use it.) Having learned scale shapes, chord shapes, caged system, etc. There has always been something missing, in the way my brain takes that information and understands how to use it in context, and then project it on the fretboard. This app is already bringing it all together. I’d say it has to be an invaluable piece of learning for any guitarist from now on. And, it’s reasonably priced, No monthly membership. Awesome. Great job fellas!

App Privacy

The developer, Trio Software Ltd, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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