From the Accompaniment Styles menu, choose from these:
Jazz - Latin/Swing
Jazz - Swing Two/Four
Jazz - Bossa/Swing (iReal Pro v2021.4 or higher)
 
The playback style changes between the Rehearsal letter A and B/C sections.
Always use a double barline at each Rehearsal letter (between sections).
 
Our Jazz - Ballad Double-time feel - plays ballad feel for the first and last choruses, but changes to double time in the middle repeats.
 
We are working on adding more dual styles.
 
Workarounds
1 Two individual styles cannot be switched to another during a song.
Use an Audio editor or DAW to (sequentially) sequence the different sections of a song or each repeat of the song with different styles. Share (export) the audio file of the song separately with the different playback styles of the song you require. Import into your audio editor and create your backing track from the different exports as required (using slice, trim, cut, copy, paste etc.) and render the resulting audio file for your practice or performance.
 
2 To have the song switching between the dual styles at every chorus as it plays through, see screenshot below:
  1. make sure that there are no repeated sections (you might need to copy/paste repeated sections);
  2. add Rehearsal letters for each section as required (Rehearsal letter A is bossa/latin);
  3. add an opening repeat at the first measure after the intro if there is one (Rehearsal letter A);
  4. add a closing repeat at the last measure (in other words, to repeat the entire song);
  5. add a text indication* at the end of the chart at the last measure indicating how many times you want the song to be repeated, for example 7x;
  6. set the Repeats in the Player controls to one chorus (1 repeat)
The Player plays the song only once (Repeats = 1) meaning the first/last time, but will keep switching styles for all 7 repeats.
 
[Optional: The intro is optional, the chart will still work without it]
 
(Example from a Mac screenshot)
 
* repeated sections, specifying how many times that section repeats