You have to know what a Chord is.
You should know what a diatonic function is.
What the buttons do
Pressing this button replays the audio clip. If you have made guesses the chords will dim as the chord changes happened.
This replays the sequence as plain chords.
This button gives you a reference to the tonic. If the recording is in C major it will give you a C-major chord. If the clip is in A-minor you will get an A-minor chord.
Pressable button to guess the chord progression. This button can also be set to hold absolute chords, or numbers. Long press the button to change mode.
This buttons reveals a menu where you can change the settings for your training session.
How to use this app?
This app is made to help you get the amount of examples needed help you to recognize progressions in music no matter how they are played. This is what the app does. It plays a short audio clip usually with 4-8 chords per audio clip.
This is how to play screen look like. The round icons on the bottom are buttons you can press. These are all the chords that are in the clip. It is your job to try to recognize the sequence. The buttons with the numbers are your guesses and are shown as you guess correct. Your guesses can either be displayed as numbers, roman numerals, diatonic functions or absolute chord.
The numbers refer to the relative position of the chord in the current scale. Same is true for the “roman numerals mode”.
If you choose to show the absolute chords you can either transpose your guess and show the progression in another key to practice transposing or it can also be in the same key as your “guess buttons”.
In the example above. The buttons at the bottom are set to C major and your guesses are transposed to G major
In this example the buttons that represent the chords you can guess on are shown as there Roman numeral equivalent. Large letters like I or IV means the chord is a major chord. Smal letters like “vi” means its a minor chord.
Press the 3 dots and settings to change the key. It will not modulate the pitch only “transpose” the written notation.