The Blues style pack includes 12 Blues accompaniment styles and you can import the Blues playlist from our forum to try your new playback styles.
The Salsa style pack includes 17.
The Brazilian style pack includes 11 Brazilian accompaniment styles.
 
Select your song, tap/click on the song to reveal the playback controls.
 
The Blues Styles will appear in your playback style list under Blues.
The Brazilian Styles will apprear in your playback style list under Brazilian.
The Salsa Styles will apprear in your playback style list under Salsa.
 
(iOS shown below, others are similar)
 
 
 
Blues in-app purchase
 
 
 
 
 
 
If you have installed into a new device/computer, iReal Pro Settings > Store > Restore purchases (from the account you used to purchase them)