i like to download peoples sax playing tracks from soundcloud and youtube, and then play along with them on my Alto (i don’t have a Tenor) but i can transpose the downloads up 5 semitones so they play the same keys on my Alto as well
this ap i great for loading music sheet Pdf’s onto the iPad,
you can then link each page to a backing track or several backing tracks, so you can play along to the music sheet with the backing track.
great for looking at the music sheet and listening to a backing track as well.